Name | Since | Deprecated | Type | OS | CPU | Component | Default | Availability | Description | Defined in |
---|---|---|---|---|---|---|---|---|---|---|
Since | Deprecated | Type | OS | CPU | Component | Availability | ||||
AbortVMOnExceptionMessage | OpenJDK6 | ccstr | runtime | NULL | notproduct | Call fatal if the exception pointed by AbortVMOnException has this message | src/share/vm/runtime/globals.hpp | |||
AbortVMOnException | OpenJDK6 | ccstr | runtime | NULL | notproduct | Call fatal if this exception is thrown. Example: java -XX:AbortVMOnException=java.lang.NullPointerException Foo | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizeDecrementScaleFactor | OpenJDK6 | uintx | runtime | 4 | product | Adaptive size scale down factor for shrinking | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizeMajorGCDecayTimeScale | OpenJDK6 | uintx | runtime | 10 | product | Time scale over which major costs decay | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizePausePolicy | OpenJDK6 | uintx | runtime | 0 | product | Policy for changing generation size for pause goals | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizePolicyCollectionCostMargin | OpenJDK6 | Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 50 | product | If collection costs are within margin, reduce both by full delta | src/share/vm/runtime/globals.hpp | ||
AdaptiveSizePolicyGCTimeLimitThreshold | OpenJDK6 | uintx | runtime | 5 | develop | Number of consecutive collections before gc time limit fires | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizePolicyInitializingSteps | OpenJDK6 | uintx | runtime | 20 | product | Number of steps where heuristics is used before data is used | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizePolicyOutputInterval | OpenJDK6 | uintx | runtime | 0 | product | Collection interval for printing information; zero means never | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizePolicyReadyThreshold | OpenJDK6 | uintx | runtime | 5 | develop | Number of collections before the adaptive sizing is started | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizePolicyWeight | OpenJDK6 | uintx | runtime | 10 | product | Weight given to exponential resizing, between 0 and 100 | src/share/vm/runtime/globals.hpp | |||
AdaptiveSizeThroughPutPolicy | OpenJDK6 | uintx | runtime | 0 | product | Policy for changing generation size for throughput goals | src/share/vm/runtime/globals.hpp | |||
AdaptiveTimeWeight | OpenJDK6 | uintx | runtime | 25 | product | Weight given to time in adaptive policy, between 0 and 100 | src/share/vm/runtime/globals.hpp | |||
AdjustConcurrency | OpenJDK6 | bool | runtime | false | product | Call thr_setconcurrency at thread creation time to avoid LWP starvation on MP systems (for Solaris Only) | src/share/vm/runtime/globals.hpp | |||
AggressiveOpts | OpenJDK6 | Deprecated in JDK11 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | false | product | Enable aggressive optimizations - see arguments.cpp | src/share/vm/runtime/globals.hpp | ||
AggressiveUnboxing | OpenJDK8 | bool | c2 | false | experimental | Control optimizations for aggressive boxing elimination | src/share/vm/opto/c2_globals.hpp | |||
AliasLevel | OpenJDK6 | Deprecated in JDK19 Obsoleted in JDK20 Expired in JDK21 | intx | c2 | 3 | product | 0 for no aliasing, 1 for oop/field/static/array split, 2 for class split, 3 for unique instances | src/share/vm/opto/c2_globals.hpp | ||
AlignVector | OpenJDK7 | bool | c2 | true | product | Perform vector store/load alignment in loop | src/share/vm/opto/c2_globals.hpp | |||
AllocateInstancePrefetchLines | OpenJDK6 | intx | runtime | 1 | product | Number of lines to prefetch ahead of instance allocation pointer | src/share/vm/runtime/globals.hpp | |||
AllocatePrefetchDistance | OpenJDK6 | intx | runtime | -1 | product | Distance to prefetch ahead of allocation pointer | src/share/vm/runtime/globals.hpp | |||
AllocatePrefetchInstr | OpenJDK6 | intx | runtime | 0 | product | Prefetch instruction to prefetch ahead of allocation pointer | src/share/vm/runtime/globals.hpp | |||
AllocatePrefetchLines | OpenJDK6 | intx | runtime | 3 | product | Number of lines to prefetch ahead of array allocation pointer | src/share/vm/runtime/globals.hpp | |||
AllocatePrefetchStepSize | OpenJDK6 | intx | runtime | 16 | product | Step size in bytes of sequential prefetch instructions | src/share/vm/runtime/globals.hpp | |||
AllocatePrefetchStyle | OpenJDK6 | intx | runtime | 1 | product | 0 = no prefetch, 1 = prefetch instructions for each allocation, 2 = use TLAB watermark to gate allocation prefetch, 3 = use BIS instruction on Sparc for allocation prefetch | src/share/vm/runtime/globals.hpp | |||
AllowJNIEnvProxy | OpenJDK6 | Deprecated in JDK13 Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Allow JNIEnv proxies for jdbx | src/share/vm/runtime/globals.hpp | ||
AllowNonVirtualCalls | OpenJDK6 | Deprecated in JDK11 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | EMBEDDED_ONLY: false | product | Obey the ACC_SUPER flag and allow invokenonvirtual calls | src/share/vm/runtime/globals.hpp | ||
AllowParallelDefineClass | OpenJDK6 | bool | runtime | false | product | Allow parallel defineClass requests for class loaders registering as parallel capable | src/share/vm/runtime/globals.hpp | |||
AllowUserSignalHandlers | OpenJDK6 | bool | runtime | false | product | Do not complain if the application installs signal handlers (Solaris & Linux only) | src/share/vm/runtime/globals.hpp | |||
AlwaysActAsServerClassMachine | OpenJDK6 | bool | runtime | false | product | Always act like a server-class machine | src/share/vm/runtime/globals.hpp | |||
AlwaysCompileLoopMethods | OpenJDK6 | bool | runtime | false | product | When using recompilation, never interpret methods containing loops | src/share/vm/runtime/globals.hpp | |||
AlwaysIncrementalInline | OpenJDK7 | bool | c2 | false | develop | do all inlining incrementally | src/share/vm/opto/c2_globals.hpp | |||
AlwaysLockClassLoader | OpenJDK6 | Deprecated in JDK17 Obsoleted in JDK18 Expired in JDK19 | bool | runtime | false | product | Require the VM to acquire the class loader lock before calling loadClass() even for class loaders registering as parallel capable | src/share/vm/runtime/globals.hpp | ||
AlwaysPreTouch | OpenJDK6 | bool | runtime | false | product | Force all freshly committed pages to be pre-touched | src/share/vm/runtime/globals.hpp | |||
AlwaysRestoreFPU | OpenJDK6 | bool | runtime | false | product | Restore the FPU control word after every JNI call (expensive) | src/share/vm/runtime/globals.hpp | |||
AlwaysTenure | OpenJDK6 | bool | runtime | false | product | Always tenure objects in eden (ParallelGC only) | src/share/vm/runtime/globals.hpp | |||
ArrayAllocatorMallocLimit | OpenJDK7 | uintx | runtime | EMBEDDED_ONLY: SOLARIS_ONLY(64*K) NOT_SOLARIS(max_uintx) | experimental | Allocation less than this value will be allocated using malloc. Larger allocations will use mmap. | src/share/vm/runtime/globals.hpp | |||
ArraycopyDstPrefetchDistance | OpenJDK6 | uintx | sparc | 0 | product | Distance to prefetch destination array in arracopy | src/cpu/sparc/vm/globals_sparc.hpp | |||
ArraycopySrcPrefetchDistance | OpenJDK6 | uintx | sparc | 0 | product | Distance to prefetch source array in arracopy | src/cpu/sparc/vm/globals_sparc.hpp | |||
AssertOnSuspendWaitFailure | OpenJDK6 | Obsoleted in JDK17 Expired in JDK18 | bool | runtime | false | product | Assert/Guarantee on external suspend wait failure | src/share/vm/runtime/globals.hpp | ||
AssertRangeCheckElimination | OpenJDK8 | bool | c1 | false | develop | Assert Range Check Elimination | src/share/vm/c1/c1_globals.hpp | |||
AssertRepeat | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1 | notproduct | number of times to evaluate expression in assert (to estimate overhead); only works with -DUSE_REPEATED_ASSERTS | src/share/vm/runtime/globals.hpp | |||
AssumeMP | OpenJDK8 | Deprecated in JDK10 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | false | product | Instruct the VM to assume multiple processors are available | src/share/vm/runtime/globals.hpp | ||
AttachListenerTimeout | OpenJDK7 | intx | aix | 1000 | define_pd_global | src/os/aix/vm/globals_aix.hpp | ||||
AutoBoxCacheMax | OpenJDK6 | intx | c2 | 128 | product | Sets max value cached by the java.lang.Integer autobox cache | src/share/vm/opto/c2_globals.hpp | |||
AutoGCSelectPauseMillis | OpenJDK6 | uintx | runtime | 5000 | product | Automatic GC selection pause threshold in milliseconds | src/share/vm/runtime/globals.hpp | |||
BCEATraceLevel | OpenJDK6 | intx | runtime | 0 | product | How much tracing to do of bytecode escape analysis estimates | src/share/vm/runtime/globals.hpp | |||
BackEdgeThreshold | OpenJDK6 | intx | runtime | 0 | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
BackEdgeThreshold | OpenJDK6 | intx | runtime | product_pd | Interpreter Back edge threshold at which an OSR compilation is invoked | src/share/vm/runtime/globals.hpp | ||||
BackEdgeThreshold | OpenJDK6 | intx | ppc | c2 | 140000 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
BackEdgeThreshold | OpenJDK6 | intx | sparc | c1 | 100000 | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
BackEdgeThreshold | OpenJDK6 | intx | sparc | c2 | 140000 | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
BackEdgeThreshold | OpenJDK6 | intx | x86 | c1 | 100000 | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
BackEdgeThreshold | OpenJDK6 | intx | x86 | c2 | 100000 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
BackEdgeThreshold | OpenJDK6 | intx | zero | shark | 100000 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
BackgroundCompilation | OpenJDK6 | bool | runtime | product_pd | A thread requesting compilation is not blocked during compilation | src/share/vm/runtime/globals.hpp | ||||
BackgroundCompilation | OpenJDK6 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
BackgroundCompilation | OpenJDK6 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
BackgroundCompilation | OpenJDK6 | bool | sparc | c2 | true | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
BackgroundCompilation | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
BackgroundCompilation | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
BackgroundCompilation | OpenJDK6 | bool | zero | shark | true | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
BailoutAfterHIR | OpenJDK6 | bool | c1 | false | develop | bailout of compilation after building of HIR | src/share/vm/c1/c1_globals.hpp | |||
BailoutAfterLIR | OpenJDK6 | bool | c1 | false | develop | bailout of compilation after building of LIR | src/share/vm/c1/c1_globals.hpp | |||
BailoutOnExceptionHandlers | OpenJDK6 | bool | c1 | false | develop | bailout of compilation for methods with exception handlers | src/share/vm/c1/c1_globals.hpp | |||
BailoutToInterpreterForThrows | OpenJDK6 | bool | c2 | false | develop | Compiled methods which throws/catches exceptions will be deopt and intp. | src/share/vm/opto/c2_globals.hpp | |||
BaseFootPrintEstimate | OpenJDK6 | uintx | runtime | 256*M | product | Estimate of footprint other than Java Heap | src/share/vm/runtime/globals.hpp | |||
BciProfileWidth | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 2 | develop | Number of return bci's to record in ret profile | src/share/vm/runtime/globals.hpp | |||
BiasedLockingBulkRebiasThreshold | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK18 Expired in JDK19 | intx | runtime | 20 | product | Threshold of number of revocations per type to try to rebias all objects in the heap of that type | src/share/vm/runtime/globals.hpp | ||
BiasedLockingBulkRevokeThreshold | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK18 Expired in JDK19 | intx | runtime | 40 | product | Threshold of number of revocations per type to permanently revoke biases of all objects in the heap of that type | src/share/vm/runtime/globals.hpp | ||
BiasedLockingDecayTime | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK18 Expired in JDK19 | intx | runtime | 25000 | product | Decay time (in milliseconds) to re-enable bulk rebiasing of a type after previous bulk rebias | src/share/vm/runtime/globals.hpp | ||
BiasedLockingStartupDelay | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK18 Expired in JDK19 | intx | runtime | 4000 | product | Number of milliseconds to wait before enabling biased locking | src/share/vm/runtime/globals.hpp | ||
BinarySwitchThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 5 | develop | Minimal number of lookupswitch entries for rewriting to binary switch | src/share/vm/runtime/globals.hpp | |||
BindCMSThreadToCPU | OpenJDK6 | bool | runtime | false | diagnostic | Bind CMS Thread to CPU if possible | src/share/vm/runtime/globals.hpp | |||
BindGCTaskThreadsToCPUs | OpenJDK6 | Obsoleted in JDK14 Expired in JDK16 | bool | runtime | false | product | Bind GCTaskThreads to CPUs if possible | src/share/vm/runtime/globals.hpp | ||
BlockCopyLowLimit | OpenJDK6 | intx | sparc | 2048 | product | Minimum size in bytes when block copy will be used | src/cpu/sparc/vm/globals_sparc.hpp | |||
BlockLayoutByFrequency | OpenJDK6 | bool | c2 | true | product | Use edge frequencies to drive block ordering | src/share/vm/opto/c2_globals.hpp | |||
BlockLayoutMinDiamondPercentage | OpenJDK6 | intx | c2 | 20 | product | Miniumum %% of a successor (predecessor) for which block layout a will allow a fork (join) in a single chain | src/share/vm/opto/c2_globals.hpp | |||
BlockLayoutRotateLoops | OpenJDK6 | bool | c2 | true | product | Allow back branches to be fall throughs in the block layour | src/share/vm/opto/c2_globals.hpp | |||
BlockOffsetArrayUseUnallocatedBlock | OpenJDK6 | bool | runtime | false | diagnostic | Maintain _unallocated_block in BlockOffsetArray (currently applicable only to CMS collector) | src/share/vm/runtime/globals.hpp | |||
BlockZeroingLowLimit | OpenJDK6 | intx | sparc | 2048 | product | Minimum size in bytes when block zeroing will be used | src/cpu/sparc/vm/globals_sparc.hpp | |||
BranchOnRegister | OpenJDK6 | Obsoleted in JDK15 Expired in JDK16 | bool | c2 | false | product | Use Sparc V9 branch-on-register opcodes | src/share/vm/opto/c2_globals.hpp | ||
BreakAtNode | OpenJDK6 | intx | c2 | 0 | notproduct | Break at construction of this Node (either _idx or _debug_idx) | src/share/vm/opto/c2_globals.hpp | |||
BreakAtWarning | OpenJDK6 | bool | runtime | false | develop | Execute breakpoint upon encountering VM warning | src/share/vm/runtime/globals.hpp | |||
BytecodeVerificationLocal | OpenJDK6 | bool | runtime | false | product | Enable the Java bytecode verifier for local classes | src/share/vm/runtime/globals.hpp | |||
BytecodeVerificationRemote | OpenJDK6 | bool | runtime | true | product | Enable the Java bytecode verifier for remote classes | src/share/vm/runtime/globals.hpp | |||
C1Breakpoint | OpenJDK6 | bool | c1 | false | develop | Sets a breakpoint at entry of each compiled method | src/share/vm/c1/c1_globals.hpp | |||
C1OptimizeVirtualCallProfiling | OpenJDK6 | bool | c1 | true | product | Use CHA and exact type results at call sites when updating MDOs | src/share/vm/c1/c1_globals.hpp | |||
C1PatchInvokeDynamic | OpenJDK8 | bool | c1 | true | diagnostic | Patch invokedynamic appendix not known at compile time | src/share/vm/c1/c1_globals.hpp | |||
C1ProfileBranches | OpenJDK6 | bool | c1 | true | product | Profile branches when generating code for updating MDOs | src/share/vm/c1/c1_globals.hpp | |||
C1ProfileCalls | OpenJDK6 | bool | c1 | true | product | Profile calls when generating code for updating MDOs | src/share/vm/c1/c1_globals.hpp | |||
C1ProfileCheckcasts | OpenJDK6 | bool | c1 | true | product | Profile checkcasts when generating code for updating MDOs | src/share/vm/c1/c1_globals.hpp | |||
C1ProfileInlinedCalls | OpenJDK6 | bool | c1 | true | product | Profile inlined calls when generating code for updating MDOs | src/share/vm/c1/c1_globals.hpp | |||
C1ProfileVirtualCalls | OpenJDK6 | bool | c1 | true | product | Profile virtual calls when generating code for updating MDOs | src/share/vm/c1/c1_globals.hpp | |||
C1UpdateMethodData | OpenJDK6 | bool | c1 | trueInTiered | product | Update MethodData*s in Tier1-generated code | src/share/vm/c1/c1_globals.hpp | |||
CIBreakAtOSR | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | develop | The id of osr compilation to break at | src/share/vm/runtime/globals.hpp | |||
CIBreakAt | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | develop | The id of compilation to break at | src/share/vm/runtime/globals.hpp | |||
CICompileNatives | OpenJDK6 | bool | runtime | true | develop | compile native methods if supported by the compiler | src/share/vm/runtime/globals.hpp | |||
CICompileOSR | OpenJDK6 | bool | runtime | develop_pd | compile on stack replacement methods if supported by the compiler | src/share/vm/runtime/globals.hpp | ||||
CICompileOSR | OpenJDK6 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
CICompileOSR | OpenJDK6 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
CICompileOSR | OpenJDK6 | bool | sparc | c2 | true | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
CICompileOSR | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
CICompileOSR | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
CICompileOSR | OpenJDK6 | bool | zero | shark | true | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
CICompilerCountPerCPU | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | 1 compiler thread for log(N CPUs) | src/share/vm/runtime/globals.hpp | |||
CICompilerCount | OpenJDK6 | intx | runtime | CI_COMPILER_COUNT | product | Number of compiler threads to run | src/share/vm/runtime/globals.hpp | |||
CICountOSR | OpenJDK6 | bool | runtime | false | develop | use a separate counter when assigning ids to osr compilations | src/share/vm/runtime/globals.hpp | |||
CICrashAt | OpenJDK8 | intx | runtime | EMBEDDED_ONLY: -1 | notproduct | id of compilation to trigger assert in compiler thread for the purpose of testing, e.g. generation of replay data | src/share/vm/runtime/globals.hpp | |||
CIFireOOMAt | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | develop | Fire OutOfMemoryErrors throughout CI for testing the compiler (non-negative value throws OOM after this many CI accesses in each compile) | src/share/vm/runtime/globals.hpp | |||
CIObjectFactoryVerify | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | notproduct | enable potentially expensive verification in ciObjectFactory | src/share/vm/runtime/globals.hpp | |||
CIPrintCompileQueue | OpenJDK6 | bool | runtime | false | develop | display the contents of the compile queue whenever a compilation is enqueued | src/share/vm/runtime/globals.hpp | |||
CIPrintCompilerName | OpenJDK6 | bool | runtime | false | develop | when CIPrint is active, print the name of the active compiler | src/share/vm/runtime/globals.hpp | |||
CIPrintMethodCodes | OpenJDK6 | bool | runtime | false | develop | print method bytecodes of the compiled code | src/share/vm/runtime/globals.hpp | |||
CIPrintRequests | OpenJDK6 | bool | runtime | false | develop | display every request for compilation | src/share/vm/runtime/globals.hpp | |||
CIPrintTypeFlow | OpenJDK6 | bool | runtime | false | develop | print the results of ciTypeFlow analysis | src/share/vm/runtime/globals.hpp | |||
CIStartOSR | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | develop | The id of the first osr compilation to permit (CICountOSR must be on) | src/share/vm/runtime/globals.hpp | |||
CIStart | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | develop | The id of the first compilation to permit | src/share/vm/runtime/globals.hpp | |||
CIStopOSR | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: max_jint | develop | The id of the last osr compilation to permit (CICountOSR must be on) | src/share/vm/runtime/globals.hpp | |||
CIStop | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: max_jint | develop | The id of the last compilation to permit | src/share/vm/runtime/globals.hpp | |||
CITimeEach | OpenJDK6 | bool | runtime | false | develop | display timing information after each successful compilation | src/share/vm/runtime/globals.hpp | |||
CITime | OpenJDK6 | bool | runtime | false | product | collect timing information for compilation | src/share/vm/runtime/globals.hpp | |||
CITraceTypeFlow | OpenJDK6 | bool | runtime | false | develop | detailed per-bytecode tracing of ciTypeFlow analysis | src/share/vm/runtime/globals.hpp | |||
CMSAbortSemantics | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Whether abort-on-overflow semantics is implemented | src/share/vm/runtime/globals.hpp | ||
CMSAbortablePrecleanMinWorkPerIteration | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 100 | product | (Temporary, subject to experimentation) Nominal minimum work per abortable preclean iteration | src/share/vm/runtime/globals.hpp | ||
CMSAbortablePrecleanWaitMillis | OpenJDK6 | intx | runtime | 100 | manageable | (Temporary, subject to experimentation) Time that we sleep between iterations when not given enough work per iteration | src/share/vm/runtime/globals.hpp | |||
CMSBitMapYieldQuantum | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 10*M | product | Bitmap operations should process at most this many bits between yields | src/share/vm/runtime/globals.hpp | ||
CMSBootstrapOccupancy | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 50 | product | Percentage CMS generation occupancy at which to initiate CMS collection for bootstrapping collection stats | src/share/vm/runtime/globals.hpp | ||
CMSCheckInterval | OpenJDK8 | uintx | runtime | 1000 | develop | Interval in milliseconds that CMS thread checks if it should start a collection cycle | src/share/vm/runtime/globals.hpp | |||
CMSClassUnloadingEnabled | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Whether class unloading enabled when using CMS GC | src/share/vm/runtime/globals.hpp | ||
CMSClassUnloadingMaxInterval | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 0 | product | When CMS class unloading is enabled, the maximum CMS cycle count for which classes may not be unloaded | src/share/vm/runtime/globals.hpp | ||
CMSCleanOnEnter | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Clean-on-enter optimization for reducing number of dirty cards | src/share/vm/runtime/globals.hpp | ||
CMSCompactWhenClearAllSoftRefs | OpenJDK6 | bool | runtime | true | product | Compact when asked to collect CMS gen with clear_all_soft_refs() | src/share/vm/runtime/globals.hpp | |||
CMSConcMarkMultiple | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 32 | product | Size (in cards) of CMS concurrent MT marking task | src/share/vm/runtime/globals.hpp | ||
CMSConcurrentMTEnabled | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Whether multi-threaded concurrent work enabled (effective only if ParNewGC) | src/share/vm/runtime/globals.hpp | ||
CMSCoordinatorYieldSleepCount | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 10 | product | Number of times the coordinator GC thread will sleep while yielding before giving up and resuming GC | src/share/vm/runtime/globals.hpp | ||
CMSDictionaryChoice | OpenJDK6 | intx | runtime | 0 | develop | Use BinaryTreeDictionary as default in the CMS generation | src/share/vm/runtime/globals.hpp | |||
CMSDumpAtPromotionFailure | OpenJDK6 | bool | runtime | false | product | Dump useful information about the state of the CMS old generation upon a promotion failure | src/share/vm/runtime/globals.hpp | |||
CMSEdenChunksRecordAlways | OpenJDK7 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Always record eden chunks used for the parallel initial mark or remark of eden | src/share/vm/runtime/globals.hpp | ||
CMSExpAvgFactor | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 50 | product | Percentage (0-100) used to weigh the current sample when computing exponential averages for CMS statistics | src/share/vm/runtime/globals.hpp | ||
CMSExtrapolateSweep | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | CMS: cushion for block demand during sweep | src/share/vm/runtime/globals.hpp | ||
CMSFullGCsBeforeCompaction | OpenJDK6 | uintx | runtime | 0 | product | Number of CMS full collection done before compaction if > 0 | src/share/vm/runtime/globals.hpp | |||
CMSIncrementalDutyCycleMin | OpenJDK6 | uintx | runtime | 0 | product | Minimum percentage (0-100) of the CMS incremental duty cycle used when CMSIncrementalPacing is enabled | src/share/vm/runtime/globals.hpp | |||
CMSIncrementalDutyCycle | OpenJDK6 | uintx | runtime | 10 | product | Percentage (0-100) of CMS incremental mode duty cycle. If CMSIncrementalPacing is enabled, then this is just the initial value. | src/share/vm/runtime/globals.hpp | |||
CMSIncrementalMode | OpenJDK6 | bool | runtime | false | product | Whether CMS GC should operate in 'incremental' mode | src/share/vm/runtime/globals.hpp | |||
CMSIncrementalOffset | OpenJDK6 | uintx | runtime | 0 | product | Percentage (0-100) by which the CMS incremental mode duty cycle is shifted to the right within the period between young GCs | src/share/vm/runtime/globals.hpp | |||
CMSIncrementalPacing | OpenJDK6 | bool | runtime | true | product | Whether the CMS incremental mode duty cycle should be automatically adjusted | src/share/vm/runtime/globals.hpp | |||
CMSIncrementalSafetyFactor | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 10 | product | Percentage (0-100) used to add conservatism when computing the duty cycle | src/share/vm/runtime/globals.hpp | ||
CMSIndexedFreeListReplenish | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 4 | product | Replenish an indexed free list with this number of chunks | src/share/vm/runtime/globals.hpp | ||
CMSInitiatingOccupancyFraction | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | intx | runtime | -1 | product | Percentage CMS generation occupancy to start a CMS collection cycle. A negative value means that CMSTriggerRatio is used | src/share/vm/runtime/globals.hpp | ||
CMSIsTooFullPercentage | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 98 | product | An absolute ceiling above which CMS will always consider the unloading of classes when class unloading is enabled | src/share/vm/runtime/globals.hpp | ||
CMSLargeCoalSurplusPercent | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | double | runtime | 0.95 | product | CMS: the factor by which to inflate estimated demand of large block sizes to prevent coalescing with an adjoining block | src/share/vm/runtime/globals.hpp | ||
CMSLargeSplitSurplusPercent | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | double | runtime | 1.00 | product | CMS: the factor by which to inflate estimated demand of large block sizes to prevent splitting to supply demand for smaller blocks | src/share/vm/runtime/globals.hpp | ||
CMSLoopWarn | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Warn in case of excessive CMS looping | src/share/vm/runtime/globals.hpp | ||
CMSMarkStackOverflowALot | OpenJDK6 | bool | runtime | false | notproduct | Simulate frequent marking stack / work queue overflow | src/share/vm/runtime/globals.hpp | |||
CMSMarkStackOverflowInterval | OpenJDK6 | uintx | runtime | 1000 | notproduct | An 'interval' counter that determines how frequently to simulate overflow; a smaller number increases frequency | src/share/vm/runtime/globals.hpp | |||
CMSMaxAbortablePrecleanLoops | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 0 | product | (Temporary, subject to experimentation) Maximum number of abortable preclean iterations, if > 0 | src/share/vm/runtime/globals.hpp | ||
CMSMaxAbortablePrecleanTime | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | intx | runtime | 5000 | product | (Temporary, subject to experimentation) Maximum time in abortable preclean (in milliseconds) | src/share/vm/runtime/globals.hpp | ||
CMSOldPLABMax | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 1024 | product | Maximum size of CMS gen promotion LAB caches per worker per block size | src/share/vm/runtime/globals.hpp | ||
CMSOldPLABMin | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 16 | product | Minimum size of CMS gen promotion LAB caches per worker per block size | src/share/vm/runtime/globals.hpp | ||
CMSOldPLABNumRefills | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 4 | product | Nominal number of refills of CMS gen promotion LAB cache per worker per block size | src/share/vm/runtime/globals.hpp | ||
CMSOldPLABReactivityFactor | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 2 | product | The gain in the feedback loop for on-the-fly PLAB resizing during a scavenge | src/share/vm/runtime/globals.hpp | ||
CMSOldPLABResizeQuicker | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | React on-the-fly during a scavenge to a sudden change in block demand rate | src/share/vm/runtime/globals.hpp | ||
CMSOldPLABToleranceFactor | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 4 | product | The tolerance of the phase-change detector for on-the-fly PLAB resizing during a scavenge | src/share/vm/runtime/globals.hpp | ||
CMSOverflowEarlyRestoration | OpenJDK6 | bool | runtime | false | develop | Restore preserved marks early | src/share/vm/runtime/globals.hpp | |||
CMSPLABRecordAlways | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Always record survivor space PLAB boundaries (effective only if CMSParallelSurvivorRemarkEnabled) | src/share/vm/runtime/globals.hpp | ||
CMSParPromoteBlocksToClaim | OpenJDK6 | uintx | runtime | 16 | product | Number of blocks to attempt to claim when refilling CMS LAB's for parallel GC | src/share/vm/runtime/globals.hpp | |||
CMSParallelInitialMarkEnabled | OpenJDK7 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Use the parallel initial mark. | src/share/vm/runtime/globals.hpp | ||
CMSParallelRemarkEnabled | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Whether parallel remark enabled (only if ParNewGC) | src/share/vm/runtime/globals.hpp | ||
CMSParallelSurvivorRemarkEnabled | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Whether parallel remark of survivor space enabled (effective only if CMSParallelRemarkEnabled) | src/share/vm/runtime/globals.hpp | ||
CMSPrecleanDenominator | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 3 | product | CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence ratio | src/share/vm/runtime/globals.hpp | ||
CMSPrecleanIter | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 3 | product | Maximum number of precleaning iteration passes | src/share/vm/runtime/globals.hpp | ||
CMSPrecleanNumerator | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 2 | product | CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence ratio | src/share/vm/runtime/globals.hpp | ||
CMSPrecleanRefLists1 | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Preclean ref lists during (initial) preclean phase | src/share/vm/runtime/globals.hpp | ||
CMSPrecleanRefLists2 | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Preclean ref lists during abortable preclean phase | src/share/vm/runtime/globals.hpp | ||
CMSPrecleanSurvivors1 | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Preclean survivors during (initial) preclean phase | src/share/vm/runtime/globals.hpp | ||
CMSPrecleanSurvivors2 | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Preclean survivors during abortable preclean phase | src/share/vm/runtime/globals.hpp | ||
CMSPrecleanThreshold | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 1000 | product | Do not iterate again if number of dirty cards is less than this | src/share/vm/runtime/globals.hpp | ||
CMSPrecleaningEnabled | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Whether concurrent precleaning enabled | src/share/vm/runtime/globals.hpp | ||
CMSPrintChunksInDump | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | In a dump enabled by CMSDumpAtPromotionFailure, include more detailed information about the free chunks | src/share/vm/runtime/globals.hpp | ||
CMSPrintEdenSurvivorChunks | OpenJDK7 | bool | runtime | false | product | Print the eden and the survivor chunks used for the parallel initial mark or remark of the eden/survivor spaces | src/share/vm/runtime/globals.hpp | |||
CMSPrintObjectsInDump | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | In a dump enabled by CMSDumpAtPromotionFailure, include more detailed information about the allocated objects | src/share/vm/runtime/globals.hpp | ||
CMSRemarkVerifyVariant | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 1 | product | Choose variant (1,2) of verification following remark | src/share/vm/runtime/globals.hpp | ||
CMSReplenishIntermediate | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Replenish all intermediate free-list caches | src/share/vm/runtime/globals.hpp | ||
CMSRescanMultiple | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 32 | product | Size (in cards) of CMS parallel rescan task | src/share/vm/runtime/globals.hpp | ||
CMSSamplingGrain | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 16*K | product | The minimum distance between eden samples for CMS (see above) | src/share/vm/runtime/globals.hpp | ||
CMSScavengeBeforeRemark | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Attempt scavenge before the CMS remark step | src/share/vm/runtime/globals.hpp | ||
CMSScheduleRemarkEdenPenetration | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 50 | product | The Eden occupancy percentage (0-100) at which to try and schedule remark pause | src/share/vm/runtime/globals.hpp | ||
CMSScheduleRemarkEdenSizeThreshold | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 2*M | product | If Eden size is below this, do not try to schedule remark | src/share/vm/runtime/globals.hpp | ||
CMSScheduleRemarkSamplingRatio | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 5 | product | Start sampling eden top at least before young gen occupancy reaches 1/ | src/share/vm/runtime/globals.hpp | ||
CMSSmallCoalSurplusPercent | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | double | runtime | 1.05 | product | CMS: the factor by which to inflate estimated demand of small block sizes to prevent coalescing with an adjoining block | src/share/vm/runtime/globals.hpp | ||
CMSSmallSplitSurplusPercent | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | double | runtime | 1.10 | product | CMS: the factor by which to inflate estimated demand of small block sizes to prevent splitting to supply demand for smaller blocks | src/share/vm/runtime/globals.hpp | ||
CMSSplitIndexedFreeListBlocks | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | When satisfying batched demand, split blocks from the IndexedFreeList whose size is a multiple of requested size | src/share/vm/runtime/globals.hpp | ||
CMSTestInFreeList | OpenJDK6 | bool | runtime | false | develop | Check if the coalesced range is already in the free lists as claimed | src/share/vm/runtime/globals.hpp | |||
CMSTraceIncrementalMode | OpenJDK6 | bool | runtime | false | develop | Trace CMS incremental mode | src/share/vm/runtime/globals.hpp | |||
CMSTraceIncrementalPacing | OpenJDK6 | bool | runtime | false | develop | Trace CMS incremental mode pacing computation | src/share/vm/runtime/globals.hpp | |||
CMSTraceSweeper | OpenJDK6 | bool | runtime | false | develop | Trace some actions of the CMS sweeper | src/share/vm/runtime/globals.hpp | |||
CMSTraceThreadState | OpenJDK6 | bool | runtime | false | develop | Trace the CMS thread state (enable the trace_state() method) | src/share/vm/runtime/globals.hpp | |||
CMSTriggerInterval | OpenJDK8 | intx | runtime | -1 | manageable | Commence a CMS collection cycle (at least) every so many milliseconds (0 permanently, -1 disabled) | src/share/vm/runtime/globals.hpp | |||
CMSTriggerRatio | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 80 | product | Percentage of MinHeapFreeRatio in CMS generation that is allocated before a CMS collection cycle commences | src/share/vm/runtime/globals.hpp | ||
CMSVerifyReturnedBytes | OpenJDK6 | bool | runtime | false | notproduct | Check that all the garbage collected was returned to the free lists | src/share/vm/runtime/globals.hpp | |||
CMSWaitDuration | OpenJDK6 | intx | runtime | 2000 | manageable | Time in milliseconds that CMS thread waits for young GC | src/share/vm/runtime/globals.hpp | |||
CMSWorkQueueDrainThreshold | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 10 | product | Don't drain below this size per parallel worker/thief | src/share/vm/runtime/globals.hpp | ||
CMSYieldSleepCount | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 0 | product | Number of times a GC thread (minus the coordinator) will sleep while yielding before giving up and resuming GC | src/share/vm/runtime/globals.hpp | ||
CMSYield | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Yield between steps of CMS | src/share/vm/runtime/globals.hpp | ||
CMSYoungGenPerWorker | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | product_pd | The maximum size of young gen chosen by default per GC worker thread available | src/share/vm/runtime/globals.hpp | |||
CMSYoungGenPerWorker | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | ppc | 16*M | define_pd_global | // Default max size of CMS young gen, per GC worker thread. | src/cpu/ppc/vm/globals_ppc.hpp | ||
CMSYoungGenPerWorker | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | sparc | 16*M | define_pd_global | // default max size of CMS young gen, per GC worker thread | src/cpu/sparc/vm/globals_sparc.hpp | ||
CMSYoungGenPerWorker | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | x86 | 64*M | define_pd_global | // default max size of CMS young gen, per GC worker thread | src/cpu/x86/vm/globals_x86.hpp | ||
CMSYoungGenPerWorker | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | zero | 16*M | define_pd_global | // default max size of CMS young gen, per GC worker thread | src/cpu/zero/vm/globals_zero.hpp | ||
CMS_FLSPadding | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 1 | product | The multiple of deviation from mean to use for buffering against volatility in free list demand | src/share/vm/runtime/globals.hpp | ||
CMS_FLSWeight | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 75 | product | Percentage (0-100) used to weigh the current sample when computing exponentially decaying averages for CMS FLS statistics | src/share/vm/runtime/globals.hpp | ||
CMS_SweepPadding | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 1 | product | The multiple of deviation from mean to use for buffering against volatility in inter-sweep duration | src/share/vm/runtime/globals.hpp | ||
CMS_SweepTimerThresholdMillis | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 10 | product | Skip block flux-rate sampling for an epoch unless inter-sweep duration exceeds this threshold in milliseconds | src/share/vm/runtime/globals.hpp | ||
CMS_SweepWeight | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 75 | product | Percentage (0-100) used to weight the current sample when computing exponentially decaying average for inter-sweep duration | src/share/vm/runtime/globals.hpp | ||
CPUForCMSThread | OpenJDK6 | uintx | runtime | 0 | diagnostic | When BindCMSThreadToCPU is true, the CPU to bind CMS thread to | src/share/vm/runtime/globals.hpp | |||
CSEArrayLength | OpenJDK6 | bool | c1 | develop_pd | Create separate nodes for length in array accesses | src/share/vm/c1/c1_globals.hpp | ||||
CSEArrayLength | OpenJDK6 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
CSEArrayLength | OpenJDK6 | bool | x86 | c1 | false | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
CanonicalizeNodes | OpenJDK6 | bool | c1 | true | develop | Canonicalize graph nodes | src/share/vm/c1/c1_globals.hpp | |||
CheckAssertionStatusDirectives | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | bool | runtime | false | notproduct | Temporary - see javaClasses.cpp | src/share/vm/runtime/globals.hpp | ||
CheckCompressedOops | OpenJDK6 | bool | runtime | true | notproduct | Generate checks in encoding/decoding code in debug VM | src/share/vm/runtime/globals.hpp | |||
CheckEndorsedAndExtDirs | OpenJDK7 | Deprecated in JDK10 Obsoleted in JDK11 Expired in JDK12 | bool | runtime | false | product | Verify the endorsed and extension directories are not used | src/share/vm/runtime/globals.hpp | ||
CheckJNICalls | OpenJDK6 | bool | runtime | false | product | Verify all arguments to JNI calls | src/share/vm/runtime/globals.hpp | |||
CheckMemoryInitialization | OpenJDK6 | bool | runtime | false | notproduct | Check memory initialization | src/share/vm/runtime/globals.hpp | |||
CheckOopishValues | OpenJDK6 | bool | runtime | false | notproduct | Warn if value contains oop (requires ZapDeadLocals) | src/share/vm/runtime/globals.hpp | |||
CheckUnhandledOops | OpenJDK6 | bool | runtime | false | develop | Check for unhandled oops in VM code | src/share/vm/runtime/globals.hpp | |||
CheckZapUnusedHeapArea | OpenJDK6 | bool | runtime | false | develop | Check zapping of unused heap space | src/share/vm/runtime/globals.hpp | |||
ClassUnloadingWithConcurrentMark | OpenJDK8 | bool | runtime | true | product | Do unloading of classes with a concurrent marking cycle | src/share/vm/runtime/globals.hpp | |||
ClassUnloading | OpenJDK6 | bool | runtime | true | product | Do unloading of classes | src/share/vm/runtime/globals.hpp | |||
CleanChunkPoolAsync | OpenJDK6 | bool | runtime | falseInEmbedded | develop | Clean the chunk pool asynchronously | src/share/vm/runtime/globals.hpp | |||
ClearFPUAtPark | OpenJDK6 | intx | runtime | 0 | product | (Unsafe, Unstable) | src/share/vm/runtime/globals.hpp | |||
ClearInterpreterLocals | OpenJDK6 | bool | runtime | false | develop | Always clear local variables of interpreter activations upon entry | src/share/vm/runtime/globals.hpp | |||
ClipInlining | OpenJDK6 | bool | runtime | true | product | Clip inlining if aggregate method exceeds DesiredMethodLimit | src/share/vm/runtime/globals.hpp | |||
CodeCacheExpansionSize | OpenJDK6 | intx | runtime | 32*K | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
CodeCacheExpansionSize | OpenJDK6 | uintx | runtime | product_pd | Code cache expansion size (in bytes) | src/share/vm/runtime/globals.hpp | ||||
CodeCacheExpansionSize | OpenJDK6 | intx | ppc | c2 | 64*K | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
CodeCacheExpansionSize | OpenJDK6 | intx | sparc | c1 | 32*K | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
CodeCacheExpansionSize | OpenJDK6 | intx | sparc | c2 | 32*K | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
CodeCacheExpansionSize | OpenJDK6 | intx | x86 | c1 | 32*K | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
CodeCacheExpansionSize | OpenJDK6 | intx | x86 | c2 | 32*K | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
CodeCacheExpansionSize | OpenJDK6 | intx | zero | shark | 32*K | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
CodeCacheMinBlockLength | OpenJDK6 | intx | runtime | 1 | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
CodeCacheMinBlockLength | OpenJDK6 | uintx | runtime | develop_pd | Minimum number of segments in a code cache block | src/share/vm/runtime/globals.hpp | ||||
CodeCacheMinBlockLength | OpenJDK6 | uintx | ppc | c2 | 4 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
CodeCacheMinBlockLength | OpenJDK6 | uintx | sparc | c1 | 1 | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
CodeCacheMinBlockLength | OpenJDK6 | uintx | sparc | c2 | 4 | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
CodeCacheMinBlockLength | OpenJDK6 | uintx | x86 | c1 | 1 | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
CodeCacheMinBlockLength | OpenJDK6 | uintx | x86 | c2 | 4 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
CodeCacheMinBlockLength | OpenJDK6 | uintx | zero | shark | 1 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
CodeCacheMinimumFreeSpace | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 500*K | product | When less than X space left, we stop compiling | src/share/vm/runtime/globals.hpp | |||
CodeCacheMinimumUseSpace | OpenJDK8 | intx | runtime | 200*K | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
CodeCacheMinimumUseSpace | OpenJDK8 | uintx | runtime | develop_pd | Minimum code cache size (in bytes) required to start VM. | src/share/vm/runtime/globals.hpp | ||||
CodeCacheMinimumUseSpace | OpenJDK8 | uintx | ppc | c2 | 400*K | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
CodeCacheMinimumUseSpace | OpenJDK8 | uintx | sparc | c1 | 400*K | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
CodeCacheMinimumUseSpace | OpenJDK8 | uintx | sparc | c2 | 400*K | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
CodeCacheMinimumUseSpace | OpenJDK8 | uintx | x86 | c1 | 400*K | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
CodeCacheMinimumUseSpace | OpenJDK8 | uintx | x86 | c2 | 400*K | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
CodeCacheMinimumUseSpace | OpenJDK8 | uintx | zero | shark | 200*K | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
CodeCacheSegmentSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 64 PPC64_ONLY(+64) | develop | Code cache segment size (in bytes) - smallest unit of allocation | src/share/vm/runtime/globals.hpp | |||
CodeEntryAlignment | OpenJDK6 | intx | runtime | develop_pd | Code entry alignment for generated code (in bytes) | src/share/vm/runtime/globals.hpp | ||||
CodeEntryAlignment | OpenJDK6 | intx | ppc | 128 | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
CodeEntryAlignment | OpenJDK6 | intx | sparc | 32 | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
CodeEntryAlignment | OpenJDK6 | intx | x86 | 16 | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
CodeEntryAlignment | OpenJDK6 | intx | zero | 32 | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
CollectGen0First | OpenJDK6 | bool | runtime | false | product | Collect youngest generation before each full GC | src/share/vm/runtime/globals.hpp | |||
CollectIndexSetStatistics | OpenJDK6 | bool | runtime | false | notproduct | Collect information about IndexSets | src/share/vm/runtime/globals.hpp | |||
CommentedAssembly | OpenJDK6 | bool | c1 | trueInDebug | develop | Show extra info in PrintNMethods output | src/share/vm/c1/c1_globals.hpp | |||
CompactFields | OpenJDK6 | Deprecated in JDK14 Obsoleted in JDK15 Expired in JDK16 | bool | runtime | true | product | Allocate nonstatic fields in gaps between previous fields | src/share/vm/runtime/globals.hpp | ||
CompilationPolicyChoice | OpenJDK6 | Deprecated in JDK13 Obsoleted in JDK14 Expired in JDK15 | intx | runtime | 0 | product | which compilation policy (0/1) | src/share/vm/runtime/globals.hpp | ||
CompileCommandFile | OpenJDK6 | ccstr | runtime | EMBEDDED_ONLY: NULL | product | Read compiler commands from this file [.hotspot_compiler] | src/share/vm/runtime/globals.hpp | |||
CompileCommand | OpenJDK6 | ccstrlist | runtime | EMBEDDED_ONLY: | product | Prepend to .hotspot_compiler; e.g. log,java/lang/String. | src/share/vm/runtime/globals.hpp | |||
CompileOnly | OpenJDK6 | ccstrlist | runtime | EMBEDDED_ONLY: | product | List of methods (pkg/class.name) to restrict compilation to | src/share/vm/runtime/globals.hpp | |||
CompileTheWorldPreloadClasses | OpenJDK6 | bool | runtime | true | develop | Preload all classes used by a class before start loading | src/share/vm/runtime/globals.hpp | |||
CompileTheWorldSafepointInterval | OpenJDK6 | intx | runtime | 100 | notproduct | Force a safepoint every n compiles so sweeper can keep up | src/share/vm/runtime/globals.hpp | |||
CompileTheWorldStartAt | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1 | notproduct | First class to consider when using +CompileTheWorld | src/share/vm/runtime/globals.hpp | |||
CompileTheWorldStopAt | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: max_jint | notproduct | Last class to consider when using +CompileTheWorld | src/share/vm/runtime/globals.hpp | |||
CompileTheWorld | OpenJDK6 | bool | runtime | false | develop | Compile all methods in all classes in bootstrap class path (stress test) | src/share/vm/runtime/globals.hpp | |||
CompileThreshold | OpenJDK6 | intx | runtime | 0 | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
CompileThreshold | OpenJDK6 | intx | runtime | product_pd | number of interpreted method invocations before (re-)compiling | src/share/vm/runtime/globals.hpp | ||||
CompileThreshold | OpenJDK6 | intx | ppc | c2 | 10000 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
CompileThreshold | OpenJDK6 | intx | sparc | c1 | 1000 | define_pd_global | // Design center runs on 1.3.1 | src/cpu/sparc/vm/c1_globals_sparc.hpp | ||
CompileThreshold | OpenJDK6 | intx | sparc | c2 | 10000 | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
CompileThreshold | OpenJDK6 | intx | x86 | c1 | 1500 | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
CompileThreshold | OpenJDK6 | intx | x86 | c2 | 10000 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
CompileThreshold | OpenJDK6 | intx | zero | shark | 1500 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
CompileZapFirst | OpenJDK6 | intx | c2 | 0 | notproduct | If +ZapDeadCompiledLocals, skip this many before compiling in zap calls | src/share/vm/opto/c2_globals.hpp | |||
CompileZapLast | OpenJDK6 | intx | c2 | -1 | notproduct | If +ZapDeadCompiledLocals, compile this many after skipping (incl. skip count, -1 = all) | src/share/vm/opto/c2_globals.hpp | |||
CompilerThreadHintNoPreempt | OpenJDK6 | Deprecated in JDK11 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | EMBEDDED_ONLY: true | product | (Solaris only) Give compiler threads an extra quanta | src/share/vm/runtime/globals.hpp | ||
CompilerThreadPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | The native priority at which compiler threads should run (-1 means no change) | src/share/vm/runtime/globals.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | aix | ppc | 4096 | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | bsd | x86 | 0 | define_pd_global | src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | bsd | zero | 0 | define_pd_global | src/os_cpu/bsd_zero/vm/globals_bsd_zero.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | linux | ppc | 4096 | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | linux | sparc | 0 | define_pd_global | src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | linux | x86 | 0 | define_pd_global | src/os_cpu/linux_x86/vm/globals_linux_x86.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | linux | zero | 0 | define_pd_global | src/os_cpu/linux_zero/vm/globals_linux_zero.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | runtime | product_pd | Compiler Thread Stack Size (in Kbytes) | src/share/vm/runtime/globals.hpp | ||||
CompilerThreadStackSize | OpenJDK6 | intx | solaris | sparc | 0 | define_pd_global | src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | solaris | x86 | 0 | define_pd_global | src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp | |||
CompilerThreadStackSize | OpenJDK6 | intx | windows | x86 | 0 | define_pd_global | src/os_cpu/windows_x86/vm/globals_windows_x86.hpp | |||
CompressedClassSpaceSize | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: 1*G | product | Maximum size of class area in Metaspace when compressed class pointers are used | src/share/vm/runtime/globals.hpp | |||
ComputeExactFPURegisterUsage | OpenJDK6 | bool | c1 | true | develop | Compute additional live set for fpu registers to simplify fpu stack merge (Intel only) | src/share/vm/c1/c1_globals.hpp | |||
ConcGCThreads | OpenJDK6 | uintx | runtime | 0 | product | Number of threads concurrent gc will use | src/share/vm/runtime/globals.hpp | |||
ConcGCYieldTimeout | OpenJDK6 | intx | runtime | 0 | develop | If non-zero, assert that GC threads yield within this number of milliseconds | src/share/vm/runtime/globals.hpp | |||
ConditionalMoveLimit | OpenJDK6 | intx | c2 | product_pd | Limit of ops to make speculative when using CMOVE | src/share/vm/opto/c2_globals.hpp | ||||
ConditionalMoveLimit | OpenJDK6 | intx | ppc | c2 | 3 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
ConditionalMoveLimit | OpenJDK6 | intx | sparc | c2 | 4 | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
ConditionalMoveLimit | OpenJDK6 | intx | x86 | c2 | 3 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
ContendedPaddingWidth | OpenJDK8 | intx | runtime | 128 | product | How many bytes to pad the fields/classes marked @Contended with | src/share/vm/runtime/globals.hpp | |||
ConvertCmpD2CmpF | OpenJDK6 | bool | c2 | true | develop | Convert cmpD to cmpF when one input is constant in float range | src/share/vm/opto/c2_globals.hpp | |||
ConvertFloat2IntClipping | OpenJDK6 | bool | c2 | true | develop | Convert float2int clipping idiom to integer clipping | src/share/vm/opto/c2_globals.hpp | |||
ConvertSleepToYield | OpenJDK6 | Deprecated in JDK9 Obsoleted in JDK10 Expired in JDK11 | bool | runtime | product_pd | Convert sleep(0) to thread yield (may be off for Solaris to improve GUI) | src/share/vm/runtime/globals.hpp | |||
ConvertSleepToYield | OpenJDK6 | Deprecated in JDK9 Obsoleted in JDK10 Expired in JDK11 | bool | ppc | true | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | |||
ConvertSleepToYield | OpenJDK6 | Deprecated in JDK9 Obsoleted in JDK10 Expired in JDK11 | bool | sparc | false | define_pd_global | // do not convert sleep(0) to yield. Helps GUI | src/cpu/sparc/vm/globals_sparc.hpp | ||
ConvertSleepToYield | OpenJDK6 | Deprecated in JDK9 Obsoleted in JDK10 Expired in JDK11 | bool | x86 | true | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | |||
ConvertSleepToYield | OpenJDK6 | Deprecated in JDK9 Obsoleted in JDK10 Expired in JDK11 | bool | zero | true | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | |||
ConvertYieldToSleep | OpenJDK6 | Deprecated in JDK9 Obsoleted in JDK10 Expired in JDK11 | bool | runtime | false | product | Convert yield to a sleep of MinSleepInterval to simulate Win32 behavior (Solaris only) | src/share/vm/runtime/globals.hpp | ||
CountBytecodes | OpenJDK6 | bool | runtime | false | develop | Count number of bytecodes executed | src/share/vm/runtime/globals.hpp | |||
CountCompiledCalls | OpenJDK6 | bool | runtime | false | develop | Count method invocations | src/share/vm/runtime/globals.hpp | |||
CountInterpCalls | OpenJDK6 | bool | sparc | false | define_pd_global | // not implemented in the interpreter | src/cpu/sparc/vm/globals_sparc.hpp | |||
CountInterpCalls | OpenJDK6 | bool | x86 | true | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
CountInterpCalls | OpenJDK6 | bool | zero | true | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
CountJNICalls | OpenJDK6 | bool | runtime | false | develop | Count jni method invocations | src/share/vm/runtime/globals.hpp | |||
CountJVMCalls | OpenJDK6 | bool | runtime | false | notproduct | Count jvm method invocations | src/share/vm/runtime/globals.hpp | |||
CountLinearScan | OpenJDK6 | bool | c1 | false | develop | collect statistic counters during LinearScan | src/share/vm/c1/c1_globals.hpp | |||
CountRemovableExceptions | OpenJDK6 | bool | runtime | false | notproduct | Count exceptions that could be replaced by branches due to inlining | src/share/vm/runtime/globals.hpp | |||
CountRuntimeCalls | OpenJDK6 | bool | runtime | false | notproduct | Count VM runtime calls | src/share/vm/runtime/globals.hpp | |||
CounterDecayMinIntervalLength | OpenJDK6 | intx | runtime | 500 | develop | The minimum interval (in milliseconds) between invocation of CounterDecay | src/share/vm/runtime/globals.hpp | |||
CounterHalfLifeTime | OpenJDK6 | intx | runtime | 30 | develop | Half-life time of invocation counters (in seconds) | src/share/vm/runtime/globals.hpp | |||
CrashGCForDumpingJavaThread | OpenJDK6 | bool | runtime | false | notproduct | Manually make GC thread crash then dump java stack trace; Test only | src/share/vm/runtime/globals.hpp | |||
CrashOnOutOfMemoryError | OpenJDK8 | bool | runtime | false | product | JVM aborts, producing an error log and core/mini dump, on the first occurrence of an out-of-memory error | src/share/vm/runtime/globals.hpp | |||
CreateMinidumpOnCrash | OpenJDK6 | Deprecated in JDK9 | bool | runtime | false | product | Create minidump on VM fatal error | src/share/vm/runtime/globals.hpp | ||
CriticalJNINatives | OpenJDK6 | Deprecated in JDK16 Obsoleted in JDK18 Expired in JDK19 | bool | runtime | true | product | Check for critical JNI entry points | src/share/vm/runtime/globals.hpp | ||
DTraceAllocProbes | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Enable dtrace probes for object allocation | src/share/vm/runtime/globals.hpp | |||
DTraceMethodProbes | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Enable dtrace probes for method-entry and method-exit | src/share/vm/runtime/globals.hpp | |||
DTraceMonitorProbes | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Enable dtrace probes for monitor events | src/share/vm/runtime/globals.hpp | |||
DebugDeoptimization | OpenJDK6 | bool | runtime | false | develop | Tracing various information while debugging deoptimization | src/share/vm/runtime/globals.hpp | |||
DebugInlinedCalls | OpenJDK6 | bool | c2 | true | diagnostic | If false, restricts profiled locations to the root method only | src/share/vm/opto/c2_globals.hpp | |||
DebugNonSafepoints | OpenJDK6 | bool | runtime | trueInDebug | diagnostic | Generate extra debugging information for non-safepoints in nmethods | src/share/vm/runtime/globals.hpp | |||
DebugVtables | OpenJDK6 | bool | runtime | false | develop | add debugging code to vtable dispatch | src/share/vm/runtime/globals.hpp | |||
Debugging | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Set when executing debug methods in debug.cpp (to prevent triggering assertions) | src/share/vm/runtime/globals.hpp | ||
DefaultMaxRAMFraction | OpenJDK6 | Deprecated in JDK8 Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 4 | product | Maximum fraction (1/n) of real memory used for maximum heap size; deprecated: to be renamed to MaxRAMFraction | src/share/vm/runtime/globals.hpp | ||
DefaultThreadPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | The native priority at which threads run if not elsewhere specified (-1 means no change) | src/share/vm/runtime/globals.hpp | |||
DeferInitialCardMark | OpenJDK6 | bool | runtime | false | diagnostic | When +ReduceInitialCardMarks, explicitly defer any that may arise from new_pre_store_barrier | src/share/vm/runtime/globals.hpp | |||
DeferPollingPageLoopCount | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK11 Expired in JDK12 | intx | runtime | EMBEDDED_ONLY: -1 | product | (Unsafe,Unstable) Number of iterations in safepoint loop before changing safepoint polling page to RO | src/share/vm/runtime/globals.hpp | ||
DeferThrSuspendLoopCount | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK11 Expired in JDK12 | intx | runtime | EMBEDDED_ONLY: 4000 | product | (Unstable) Number of times to iterate in safepoint loop before blocking VM threads | src/share/vm/runtime/globals.hpp | ||
DelayCompilationDuringStartup | OpenJDK6 | bool | runtime | true | develop | Delay invoking the compiler until main application class is loaded | src/share/vm/runtime/globals.hpp | |||
DeoptC1 | OpenJDK6 | bool | c1 | true | develop | Use deoptimization in C1 | src/share/vm/c1/c1_globals.hpp | |||
DeoptimizeALotInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 5 | notproduct | Number of exits until DeoptimizeALot kicks in | src/share/vm/runtime/globals.hpp | |||
DeoptimizeALot | OpenJDK6 | bool | runtime | false | develop | Deoptimize at every exit from the runtime system | src/share/vm/runtime/globals.hpp | |||
DeoptimizeOnlyAt | OpenJDK6 | ccstrlist | runtime | notproduct | A comma separated list of bcis to deoptimize at | src/share/vm/runtime/globals.hpp | ||||
DeoptimizeRandom | OpenJDK6 | bool | runtime | false | product | Deoptimize random frames on random exit from the runtime system | src/share/vm/runtime/globals.hpp | |||
DesiredMethodLimit | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 8000 | develop | The desired maximum method size (in bytecodes) after inlining | src/share/vm/runtime/globals.hpp | |||
DieOnSafepointTimeout | OpenJDK6 | bool | runtime | false | develop | Die upon failure to reach safepoint (see SafepointTimeout) | src/share/vm/runtime/globals.hpp | |||
DisableAttachMechanism | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Disable mechanism that allows tools to attach to this VM | src/share/vm/runtime/globals.hpp | |||
DisableExplicitGC | OpenJDK6 | bool | runtime | false | product | Ignore calls to System.gc() | src/share/vm/runtime/globals.hpp | |||
DisableIntrinsic | OpenJDK6 | ccstrlist | c2 | diagnostic | do not expand intrinsics whose (internal) names appear here | src/share/vm/opto/c2_globals.hpp | ||||
DisablePrimordialThreadGuardPages | OpenJDK8 | bool | runtime | false | experimental | Disable the use of stack guard pages if the JVM is loaded on the primordial process thread | src/share/vm/runtime/globals.hpp | |||
DisableStartThread | OpenJDK6 | bool | runtime | false | develop | Disable starting of additional Java threads (for debugging only) | src/share/vm/runtime/globals.hpp | |||
DisplayVMOutputToStderr | OpenJDK6 | bool | runtime | false | product | If DisplayVMOutput is true, display all VM output to stderr | src/share/vm/runtime/globals.hpp | |||
DisplayVMOutputToStdout | OpenJDK6 | bool | runtime | false | product | If DisplayVMOutput is true, display all VM output to stdout | src/share/vm/runtime/globals.hpp | |||
DisplayVMOutput | OpenJDK6 | bool | runtime | true | diagnostic | Display all VM output on the tty, independently of LogVMOutput | src/share/vm/runtime/globals.hpp | |||
DoCEE | OpenJDK6 | bool | c1 | true | develop | Do Conditional Expression Elimination to simplify CFG | src/share/vm/c1/c1_globals.hpp | |||
DoEscapeAnalysis | OpenJDK6 | bool | c2 | true | product | Perform escape analysis | src/share/vm/opto/c2_globals.hpp | |||
DominatorSearchLimit | OpenJDK6 | intx | c2 | 1000 | diagnostic | Iterations limit in Node::dominates | src/share/vm/opto/c2_globals.hpp | |||
DontCompileHugeMethods | OpenJDK6 | bool | runtime | true | product | Do not compile methods > HugeMethodLimit | src/share/vm/runtime/globals.hpp | |||
DontYieldALotInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 10 | develop | Interval between which yields will be dropped (milliseconds) | src/share/vm/runtime/globals.hpp | |||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | aix | ppc | false | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | ||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | bsd | x86 | false | define_pd_global | src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp | ||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | bsd | zero | false | define_pd_global | src/os_cpu/bsd_zero/vm/globals_bsd_zero.hpp | ||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | linux | ppc | false | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | ||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | linux | x86 | false | define_pd_global | src/os_cpu/linux_x86/vm/globals_linux_x86.hpp | ||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | linux | zero | false | define_pd_global | src/os_cpu/linux_zero/vm/globals_linux_zero.hpp | ||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | runtime | product_pd | Throw away obvious excess yield calls (for Solaris only) | src/share/vm/runtime/globals.hpp | |||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | sparc | true | define_pd_global | // yield no more than 100 times per second | src/cpu/sparc/vm/globals_sparc.hpp | ||
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | solaris | x86 | true | define_pd_global | // Determined in the design center | src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp | |
DontYieldALot | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | windows | x86 | false | define_pd_global | src/os_cpu/windows_x86/vm/globals_windows_x86.hpp | ||
DumpLoadedClassList | OpenJDK8 | ccstr | runtime | EMBEDDED_ONLY: NULL | product | Dump the names all loaded classes, that could be stored into the CDS archive, in the specified file | src/share/vm/runtime/globals.hpp | |||
DumpReplayDataOnError | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: true | product | Record replay data for crashing compiler threads | src/share/vm/runtime/globals.hpp | |||
DumpSharedSpaces | OpenJDK6 | Deprecated in JDK18 Obsoleted in JDK19 | bool | runtime | EMBEDDED_ONLY: false | product | Special mode: JVM reads a class list, loads classes, builds shared spaces, and dumps the shared spaces to a file to be used in future JVM runs | src/share/vm/runtime/globals.hpp | ||
EagerInitialization | OpenJDK6 | bool | runtime | false | develop | Eagerly initialize classes if possible | src/share/vm/runtime/globals.hpp | |||
EagerXrunInit | OpenJDK6 | bool | runtime | false | product | Eagerly initialize -Xrun libraries; allows startup profiling, but not all -Xrun libraries may support the state of the VM at this time | src/share/vm/runtime/globals.hpp | |||
EliminateAllocationArraySizeLimit | OpenJDK6 | intx | c2 | 64 | product | Array size (number of elements) limit for scalar replacement | src/share/vm/opto/c2_globals.hpp | |||
EliminateAllocations | OpenJDK6 | bool | c2 | true | product | Use escape analysis to eliminate allocations | src/share/vm/opto/c2_globals.hpp | |||
EliminateAutoBox | OpenJDK6 | bool | c2 | true | product | Control optimizations for autobox elimination | src/share/vm/opto/c2_globals.hpp | |||
EliminateBlocks | OpenJDK6 | bool | c1 | true | develop | Eliminate unneccessary basic blocks | src/share/vm/c1/c1_globals.hpp | |||
EliminateFieldAccess | OpenJDK6 | bool | c1 | true | develop | Optimize field loads and stores | src/share/vm/c1/c1_globals.hpp | |||
EliminateLocks | OpenJDK6 | bool | c2 | true | product | Coarsen locks when possible | src/share/vm/opto/c2_globals.hpp | |||
EliminateNestedLocks | OpenJDK6 | bool | c2 | true | product | Eliminate nested locks of the same object when possible | src/share/vm/opto/c2_globals.hpp | |||
EliminateNestedLocks | OpenJDK6 | bool | shark | true | product | Eliminate nested locks of the same object when possible | src/share/vm/shark/shark_globals.hpp | |||
EliminateNullChecks | OpenJDK6 | bool | c1 | true | develop | Eliminate unneccessary null checks | src/share/vm/c1/c1_globals.hpp | |||
EmitSync | OpenJDK6 | Obsoleted in JDK12 Expired in JDK13 | intx | runtime | 0 | product | (Unsafe, Unstable) Control emission of inline sync fast-path code | src/share/vm/runtime/globals.hpp | ||
EnableContended | OpenJDK8 | bool | runtime | true | product | Enable @Contended annotation support | src/share/vm/runtime/globals.hpp | |||
EnableInvokeDynamic | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: true | diagnostic | support JSR 292 (method handles, invokedynamic, anonymous classes | src/share/vm/runtime/globals.hpp | |||
EnableTracing | OpenJDK7 | Obsoleted in JDK11 Expired in JDK12 | bool | runtime | EMBEDDED_ONLY: false | product | Enable event-based tracing | src/share/vm/runtime/globals.hpp | ||
ErgoHeapSizeLimit | OpenJDK6 | uintx | runtime | 0 | product | Maximum ergonomically set heap size (in bytes); zero means use MaxRAM / MaxRAMFraction | src/share/vm/runtime/globals.hpp | |||
ErrorFile | OpenJDK6 | ccstr | runtime | NULL | product | If an error occurs, save the error data to this file [default: ./hs_err_pid%p.log] (%p replaced with pid) | src/share/vm/runtime/globals.hpp | |||
ErrorHandlerTest | OpenJDK6 | uintx | runtime | 0 | notproduct | If > 0, provokes an error after VM initialization; the value determines which error to provoke. See test_error_handler() in debug.cpp. | src/share/vm/runtime/globals.hpp | |||
ErrorReportServer | OpenJDK6 | Obsoleted in JDK12 Expired in JDK13 | ccstr | runtime | EMBEDDED_ONLY: NULL | product | Override built-in error report server address | src/share/vm/runtime/globals.hpp | ||
EscapeAnalysisTimeout | OpenJDK7 | double | c2 | 20. DEBUG_ONLY(+40.) | product | Abort EA when it reaches time limit (in sec) | src/share/vm/opto/c2_globals.hpp | |||
EstimateArgEscape | OpenJDK6 | bool | runtime | true | product | Analyze bytecodes to estimate escape state of arguments | src/share/vm/runtime/globals.hpp | |||
ExecuteInternalVMTests | OpenJDK6 | bool | runtime | false | notproduct | Enable execution of internal VM tests | src/share/vm/runtime/globals.hpp | |||
ExitEscapeAnalysisOnTimeout | OpenJDK7 | bool | c2 | true | develop | Exit or throw assert in EA when it reaches time limit | src/share/vm/opto/c2_globals.hpp | |||
ExitOnFullCodeCache | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | notproduct | Exit the VM if we fill the code cache | src/share/vm/runtime/globals.hpp | |||
ExitOnOutOfMemoryError | OpenJDK8 | bool | runtime | false | product | JVM exits on the first occurrence of an out-of-memory error | src/share/vm/runtime/globals.hpp | |||
ExitVMOnVerifyError | OpenJDK6 | bool | runtime | false | notproduct | standard exit from VM if bytecode verify error (only in debug mode) | src/share/vm/runtime/globals.hpp | |||
ExplicitGCInvokesConcurrentAndUnloadsClasses | OpenJDK6 | bool | runtime | false | product | A System.gc() request invokes a concurrent collection and also unloads classes during such a concurrent gc cycle (effective only when UseConcMarkSweepGC) | src/share/vm/runtime/globals.hpp | |||
ExplicitGCInvokesConcurrent | OpenJDK6 | bool | runtime | false | product | A System.gc() request invokes a concurrent collection; (effective only when UseConcMarkSweepGC) | src/share/vm/runtime/globals.hpp | |||
ExtendedDTraceProbes | OpenJDK6 | Deprecated in JDK19 Obsoleted in JDK20 Expired in JDK21 | bool | runtime | EMBEDDED_ONLY: false | product | Enable performance-impacting dtrace probes | src/share/vm/runtime/globals.hpp | ||
ExtraSharedClassListFile | OpenJDK8 | ccstr | runtime | EMBEDDED_ONLY: NULL | product | Extra classlist for building the CDS archive file | src/share/vm/runtime/globals.hpp | |||
FLOATPRESSURE | OpenJDK6 | intx | c2 | develop_pd | Number of float LRG's that constitute high register pressure | src/share/vm/opto/c2_globals.hpp | ||||
FLOATPRESSURE | OpenJDK6 | intx | ppc | c2 | 28 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
FLOATPRESSURE | OpenJDK6 | intx | sparc | c2 | 52 | define_pd_global | // C2 on V9 gets to use all the float/double registers | src/cpu/sparc/vm/c2_globals_sparc.hpp | ||
FLOATPRESSURE | OpenJDK6 | intx | x86 | c2 | 6 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
FLSAlwaysCoalesceLarge | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | CMS: larger free blocks are always available for coalescing | src/share/vm/runtime/globals.hpp | ||
FLSCoalescePolicy | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 2 | product | CMS: aggressiveness level for coalescing, increasing from 0 to 4 | src/share/vm/runtime/globals.hpp | ||
FLSLargestBlockCoalesceProximity | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | double | runtime | 0.99 | product | CMS: the smaller the percentage the greater the coalescing force | src/share/vm/runtime/globals.hpp | ||
FLSVerifyAllHeapReferences | OpenJDK6 | bool | runtime | false | diagnostic | Verify that all references across the FLS boundary are to valid objects | src/share/vm/runtime/globals.hpp | |||
FLSVerifyDictionary | OpenJDK6 | bool | runtime | false | develop | Do lots of (expensive) FLS dictionary verification | src/share/vm/runtime/globals.hpp | |||
FLSVerifyIndexTable | OpenJDK6 | bool | runtime | false | diagnostic | Do lots of (expensive) FLS index table verification | src/share/vm/runtime/globals.hpp | |||
FLSVerifyLists | OpenJDK6 | bool | runtime | false | diagnostic | Do lots of (expensive) FreeListSpace verification | src/share/vm/runtime/globals.hpp | |||
FailOverToOldVerifier | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Fail over to old verifier when split verifier fails | src/share/vm/runtime/globals.hpp | ||
FastAllocateSizeLimit | OpenJDK6 | intx | runtime | 128*K | develop | /* Note: This value is zero mod 1<<13 for a cheap sparc set. */Inline allocations larger than this in doublewords must go slow | src/share/vm/runtime/globals.hpp | |||
FastSuperclassLimit | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 8 | develop | Depth of hardwired instanceof accelerator array | src/share/vm/runtime/globals.hpp | |||
FastTLABRefill | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK11 Expired in JDK12 | bool | runtime | true | product | Use fast TLAB refill code | src/share/vm/runtime/globals.hpp | ||
FenceInstruction | OpenJDK6 | intx | x86 | 0 | product | (Unsafe,Unstable) Experimental | src/cpu/x86/vm/globals_x86.hpp | |||
FieldsAllocationStyle | OpenJDK6 | Deprecated in JDK14 Obsoleted in JDK15 Expired in JDK16 | intx | runtime | 1 | product | 0 - type based with oops first, 1 - with oops last, 2 - oops in super and sub classes are together | src/share/vm/runtime/globals.hpp | ||
FillDelaySlots | OpenJDK6 | bool | runtime | true | develop | Fill delay slots (on SPARC only) | src/share/vm/runtime/globals.hpp | |||
FilterSpuriousWakeups | OpenJDK6 | Deprecated in JDK18 Obsoleted in JDK19 Expired in JDK20 | bool | runtime | true | product | Prevent spurious or premature wakeups from object.wait (Solaris only) | src/share/vm/runtime/globals.hpp | ||
FoldStableValues | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: true | diagnostic | Optimize loads from stable fields (marked w/ @Stable) | src/share/vm/runtime/globals.hpp | |||
ForceDynamicNumberOfGCThreads | OpenJDK6 | bool | runtime | false | diagnostic | Force dynamic selection of the number of parallel threads parallel gc will use to aid debugging | src/share/vm/runtime/globals.hpp | |||
ForceFloatExceptions | OpenJDK6 | bool | runtime | trueInDebug | develop | Force exceptions on FP stack under/overflow | src/share/vm/runtime/globals.hpp | |||
ForceNUMA | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Force NUMA optimizations on single-node/UMA systems | src/share/vm/runtime/globals.hpp | ||
ForceTimeHighResolution | OpenJDK6 | bool | runtime | false | product | Using high time resolution (for Win32 only) | src/share/vm/runtime/globals.hpp | |||
ForceUnreachable | OpenJDK6 | bool | runtime | false | diagnostic | Make all non code cache addresses to be unreachable by forcing use of 64bit literal fixups | src/share/vm/runtime/globals.hpp | |||
FreqCountInvocations | OpenJDK6 | intx | c2 | 1 | develop | Scaling factor for branch frequencies (deprecated) | src/share/vm/opto/c2_globals.hpp | |||
FreqInlineSize | OpenJDK6 | intx | runtime | 0 | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
FreqInlineSize | OpenJDK6 | intx | runtime | product_pd | The maximum bytecode size of a frequent method to be inlined | src/share/vm/runtime/globals.hpp | ||||
FreqInlineSize | OpenJDK6 | intx | ppc | c2 | 175 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
FreqInlineSize | OpenJDK6 | intx | sparc | c1 | 325 | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
FreqInlineSize | OpenJDK6 | intx | sparc | c2 | 175 | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
FreqInlineSize | OpenJDK6 | intx | x86 | c1 | 325 | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
FreqInlineSize | OpenJDK6 | intx | x86 | c2 | 325 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
FreqInlineSize | OpenJDK6 | intx | zero | shark | 325 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
FullGCALotDummies | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 32*K | notproduct | Dummy object allocated with +FullGCALot, forcing all objects to move | src/share/vm/runtime/globals.hpp | |||
FullGCALotInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1 | notproduct | Interval between which full gc will occur with +FullGCALot | src/share/vm/runtime/globals.hpp | |||
FullGCALotStart | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | notproduct | For which invocation to start FullGCAlot | src/share/vm/runtime/globals.hpp | |||
FullGCALot | OpenJDK6 | bool | runtime | false | develop | Force full gc at every Nth exit from the runtime system (N=FullGCALotInterval) | src/share/vm/runtime/globals.hpp | |||
G1ConcMarkForceOverflow | OpenJDK6 | uintx | gc | 0 | develop | The number of times we'll force an overflow during concurrent marking | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1ConcMarkStepDurationMillis | OpenJDK6 | double | gc | 10.0 | product | Target duration of individual concurrent marking steps in milliseconds. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1ConcRSHotCardLimit | OpenJDK6 | Obsoleted in JDK21 Expired in JDK24 | uintx | gc | 4 | product | The threshold that defines (>=) a hot card. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1ConcRSLogCacheSize | OpenJDK6 | Obsoleted in JDK21 Expired in JDK24 | uintx | gc | 10 | product | Log base 2 of the length of conc RS hot-card cache. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1ConcRefinementGreenZone | OpenJDK6 | Obsoleted in JDK20 Expired in JDK24 | intx | gc | 0 | product | The number of update buffers that are left in the queue by the concurrent processing threads. Will be selected ergonomically by default. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1ConcRefinementRedZone | OpenJDK6 | Obsoleted in JDK20 Expired in JDK24 | intx | gc | 0 | product | Maximum number of enqueued update buffers before mutator threads start processing new ones instead of enqueueing them. Will be selected ergonomically by default. Zero will disable concurrent processing. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1ConcRefinementServiceIntervalMillis | OpenJDK6 | Obsoleted in JDK20 Expired in JDK24 | intx | gc | 300 | product | The last concurrent refinement thread wakes up every specified number of milliseconds to do miscellaneous work. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1ConcRefinementThreads | OpenJDK6 | uintx | gc | 0 | product | If non-0 is the number of parallel rem set update threads, otherwise the value is determined ergonomically. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1ConcRefinementThresholdStep | OpenJDK6 | Obsoleted in JDK20 Expired in JDK24 | intx | gc | 0 | product | Each time the rset update queue increases by this amount activate the next refinement thread if available. Will be selected ergonomically by default. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1ConcRefinementYellowZone | OpenJDK6 | Obsoleted in JDK20 Expired in JDK24 | intx | gc | 0 | product | Number of enqueued update buffers that will trigger concurrent processing. Will be selected ergonomically by default. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1ConcRegionFreeingVerbose | OpenJDK6 | bool | gc | false | develop | Enables verboseness during concurrent region freeing | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1ConfidencePercent | OpenJDK6 | uintx | gc | 50 | product | Confidence level for MMU/pause predictions | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1DummyRegionsPerGC | OpenJDK6 | uintx | gc | 0 | develop | The number of dummy regions G1 will allocate at the end of each evacuation pause in order to artificially fill up the heap and stress the marking implementation. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EagerReclaimHumongousObjectsWithStaleRefs | OpenJDK8 | bool | gc | true | experimental | Try to reclaim dead large objects that have a few stale references at every young GC. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EagerReclaimHumongousObjects | OpenJDK8 | bool | gc | true | experimental | Try to reclaim dead large objects at every young GC. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EvacuationFailureALotCount | OpenJDK7 | uintx | gc | 1000 | develop | Number of successful evacuations between evacuation failures occurring at object copying | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EvacuationFailureALotDuringConcMark | OpenJDK7 | bool | gc | true | develop | Force use of evacuation failure handling during evacuation pauses when marking is in progress | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EvacuationFailureALotDuringInitialMark | OpenJDK7 | bool | gc | true | develop | Force use of evacuation failure handling during initial mark evacuation pauses | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EvacuationFailureALotDuringMixedGC | OpenJDK7 | bool | gc | true | develop | Force use of evacuation failure handling during mixed evacuation pauses | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EvacuationFailureALotDuringYoungGC | OpenJDK7 | bool | gc | true | develop | Force use of evacuation failure handling during young evacuation pauses | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EvacuationFailureALotInterval | OpenJDK7 | uintx | gc | 5 | develop | Total collections between forced triggering of evacuation failures | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1EvacuationFailureALot | OpenJDK7 | bool | gc | false | notproduct | Force use of evacuation failure handling during certain evacuation pauses | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1ExitOnExpansionFailure | OpenJDK6 | bool | gc | false | develop | Raise a fatal VM exit out of memory failure in the event that heap expansion fails due to running out of swap. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1ExpandByPercentOfAvailable | OpenJDK6 | intx | gc | 20 | experimental | When expanding, % of uncommitted space to claim. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1FailOnFPError | OpenJDK6 | bool | gc | false | develop | When set, G1 will fail when it encounters an FP 'error', so as to allow debugging | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1HRRSFlushLogBuffersOnVerify | OpenJDK6 | bool | gc | false | develop | Forces flushing of log buffers before verification. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1HRRSUseSparseTable | OpenJDK6 | bool | gc | true | develop | When true, use sparse table to save space. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1HeapRegionSize | OpenJDK6 | uintx | gc | 0 | product | Size of the G1 regions. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1HeapWastePercent | OpenJDK7 | uintx | gc | 5 | product | Amount of space, expressed as a percentage of the heap size, that G1 is willing not to collect to avoid expensive GCs. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1LogLevel | OpenJDK7 | ccstr | gc | NULL | experimental | Log level for G1 logging: fine, finer, finest | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1MarkingOverheadPercent | OpenJDK6 | intx | gc | 0 | develop | Overhead of concurrent marking | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1MarkingVerboseLevel | OpenJDK6 | intx | gc | 0 | develop | Level (0-4) of verboseness of the marking code | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1MaxNewSizePercent | OpenJDK7 | uintx | gc | 60 | experimental | Percentage (0-100) of the heap size to use as default maximum young gen size. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1MaxVerifyFailures | OpenJDK6 | intx | gc | -1 | develop | The maximum number of verification failrues to print. -1 means print all. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1MixedGCCountTarget | OpenJDK7 | uintx | gc | 8 | product | The target number of mixed GCs after a marking cycle. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1MixedGCLiveThresholdPercent | OpenJDK7 | uintx | gc | 85 | experimental | Threshold for regions to be considered for inclusion in the collection set of mixed GCs. Regions with live bytes exceeding this will not be collected. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1NewSizePercent | OpenJDK7 | uintx | gc | 5 | experimental | Percentage (0-100) of the heap size to use as default minimum young gen size. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1OldCSetRegionThresholdPercent | OpenJDK6 | uintx | gc | 10 | experimental | An upper bound for the number of old CSet regions expressed as a percentage of the heap size. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1PrintHeapRegions | OpenJDK6 | bool | gc | false | diagnostic | If set G1 will print information on which regions are being allocated and which are reclaimed. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1PrintReachableAtInitialMark | OpenJDK6 | bool | gc | false | develop | Reachable object dump at the initial mark pause | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1PrintReachableBaseFile | OpenJDK6 | ccstr | gc | NULL | develop | The base file name for the reachable object dumps | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1PrintRegionLivenessInfo | OpenJDK6 | bool | gc | false | diagnostic | Prints the liveness information for all regions in the heap at the end of a marking cycle. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RSBarrierRegionFilter | OpenJDK6 | bool | gc | true | develop | If true, generate region filtering code in RS barrier | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RSLogCheckCardTable | OpenJDK6 | bool | gc | false | develop | If true, verify that no dirty cards remain after RS log processing. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RSScrubVerbose | OpenJDK6 | bool | gc | false | develop | When true, do RS scrubbing with verbose output. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RSetRegionEntriesBase | OpenJDK6 | intx | gc | 256 | develop | Max number of regions in a fine-grain table per MB. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RSetRegionEntries | OpenJDK6 | Obsoleted in JDK18 Expired in JDK19 | intx | gc | 0 | product | Max number of regions for which we keep bitmaps. Will be set ergonomically by default | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1RSetScanBlockSize | OpenJDK6 | Deprecated in JDK14 Obsoleted in JDK15 Expired in JDK16 | uintx | gc | 64 | product | Size of a work unit of cards claimed by a worker thread during RSet scanning. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1RSetSparseRegionEntriesBase | OpenJDK6 | intx | gc | 4 | develop | Max number of entries per region in a sparse table per MB. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RSetSparseRegionEntries | OpenJDK6 | Obsoleted in JDK18 Expired in JDK19 | intx | gc | 0 | product | Max number of entries per region in a sparse table. Will be set ergonomically by default. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1RSetUpdatingPauseTimePercent | OpenJDK6 | intx | gc | 10 | product | A target percentage of time that is allowed to be spend on process RS update buffers during the collection pause. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RecordHRRSEvents | OpenJDK6 | bool | gc | false | develop | When true, record recent calls to rem set operations. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RecordHRRSOops | OpenJDK6 | bool | gc | false | develop | When true, record recent calls to rem set operations. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1RefProcDrainInterval | OpenJDK6 | intx | gc | 10 | product | The number of discovered reference objects to process before draining concurrent marking work queues. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1ReservePercent | OpenJDK6 | uintx | gc | 10 | product | It determines the minimum reserve we should have in the heap to minimize the probability of promotion failure. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1SATBBufferEnqueueingThresholdPercent | OpenJDK6 | uintx | gc | 60 | product | Before enqueueing them, each mutator thread tries to do some filtering on the SATB buffers it generates. If post-filtering the percentage of retained entries is over this threshold the buffer will be enqueued for processing. A value of 0 specifies that mutator threads should not do such filtering. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1SATBBufferSize | OpenJDK6 | intx | gc | 1*K | product | Number of entries in an SATB log buffer. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1SATBPrintStubs | OpenJDK6 | bool | gc | false | develop | If true, print generated stubs for the SATB barrier | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1SATBProcessCompletedThreshold | OpenJDK6 | intx | gc | 20 | develop | Number of completed buffers that triggers log processing. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1ScrubRemSets | OpenJDK6 | bool | gc | true | develop | When true, do RS scrubbing after cleanup. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1SecondaryFreeListAppendLength | OpenJDK6 | uintx | gc | 5 | develop | The number of regions we will add to the secondary free list at every append operation | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1StressConcRegionFreeingDelayMillis | OpenJDK6 | uintx | gc | 0 | develop | Artificial delay during concurrent region freeing | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1StressConcRegionFreeing | OpenJDK6 | bool | gc | false | develop | It stresses the concurrent region freeing operation | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1SummarizeConcMark | OpenJDK6 | bool | gc | false | diagnostic | Summarize concurrent mark info | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1SummarizeRSetStatsPeriod | OpenJDK6 | intx | gc | 0 | diagnostic | The period (in number of GCs) at which we will generate update buffer processing info (0 means do not periodically generate this info); it also requires -XX:+G1SummarizeRSetStats | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1SummarizeRSetStats | OpenJDK6 | bool | gc | false | diagnostic | Summarize remembered set processing info | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1TraceConcRefinement | OpenJDK6 | bool | gc | false | diagnostic | Trace G1 concurrent refinement | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1TraceEagerReclaimHumongousObjects | OpenJDK8 | bool | gc | false | experimental | Print some information about large object liveness at every young GC. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1TraceHeapRegionRememberedSet | OpenJDK7 | bool | gc | false | develop | Enables heap region remembered set debug logs | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1TraceMarkStackOverflow | OpenJDK6 | bool | gc | false | develop | If true, extra debugging code for CM restart for ovflw. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1TraceStringSymbolTableScrubbing | OpenJDK7 | bool | gc | false | experimental | Trace information string and symbol table scrubbing. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1UpdateBufferSize | OpenJDK6 | intx | gc | 256 | product | Size of an update buffer | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1UseAdaptiveConcRefinement | OpenJDK6 | Obsoleted in JDK20 Expired in JDK24 | bool | gc | true | product | Select green, yellow and red zones adaptively to meet the the pause requirements. | src/share/vm/gc_implementation/g1/g1_globals.hpp | ||
G1UseConcMarkReferenceProcessing | OpenJDK6 | bool | gc | true | experimental | If true, enable reference discovery during concurrent marking and reference processing at the end of remark. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1VerifyBitmaps | OpenJDK8 | bool | gc | false | develop | Verifies the consistency of the marking bitmaps | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1VerifyCTCleanup | OpenJDK6 | bool | gc | false | develop | Verify card table cleanup. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1VerifyDuringGCPrintReachable | OpenJDK6 | bool | gc | false | develop | If conc mark verification fails, dump reachable objects | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1VerifyHeapRegionCodeRoots | OpenJDK7 | bool | gc | false | diagnostic | Verify the code root lists attached to each heap region. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1VerifyRSetsDuringFullGC | OpenJDK7 | bool | gc | false | diagnostic | If true, perform verification of each heap region's remembered set when verifying the heap during a full GC. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1YoungSurvRateNumRegionsSummary | OpenJDK6 | intx | gc | 0 | develop | the number of regions for which we'll print a surv rate summary. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
G1YoungSurvRateVerbose | OpenJDK6 | bool | gc | false | develop | print out the survival rate of young regions according to age. | src/share/vm/gc_implementation/g1/g1_globals.hpp | |||
GCALotAtAllSafepoints | OpenJDK6 | bool | runtime | false | notproduct | Enforce ScavengeALot/GCALot at all potential safepoints | src/share/vm/runtime/globals.hpp | |||
GCDrainStackTargetSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 64 | product | Number of entries we will try to leave on the stack during parallel gc | src/share/vm/runtime/globals.hpp | |||
GCExpandToAllocateDelayMillis | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 0 | develop | Delay between expansion and allocation (in milliseconds) | src/share/vm/runtime/globals.hpp | |||
GCHeapFreeLimit | OpenJDK6 | uintx | runtime | 2 | product | Minimum percentage of free space after a full GC before an OutOfMemoryError is thrown (used with GCTimeLimit) | src/share/vm/runtime/globals.hpp | |||
GCLockerEdenExpansionPercent | OpenJDK6 | Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 5 | product | How much the GC can expand the eden by while the GC locker is active (as a percentage) | src/share/vm/runtime/globals.hpp | ||
GCLockerInvokesConcurrent | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | The exit of a JNI critical section necessitating a scavenge, also kicks off a background concurrent collection | src/share/vm/runtime/globals.hpp | ||
GCLockerRetryAllocationCount | OpenJDK8 | uintx | runtime | 2 | diagnostic | Number of times to retry allocations when blocked by the GC locker | src/share/vm/runtime/globals.hpp | |||
GCLogFileSize | OpenJDK6 | uintx | runtime | 8*K | product | GC log file size, requires UseGCLogFileRotation. Set to 0 to only trigger rotation via jcmd | src/share/vm/runtime/globals.hpp | |||
GCParallelVerificationEnabled | OpenJDK6 | bool | runtime | true | diagnostic | Enable parallel memory system verification | src/share/vm/runtime/globals.hpp | |||
GCPauseIntervalMillis | OpenJDK6 | uintx | runtime | 0 | product | Time slice for MMU specification | src/share/vm/runtime/globals.hpp | |||
GCTaskTimeStampEntries | OpenJDK6 | Obsoleted in JDK14 Expired in JDK16 | uintx | runtime | 200 | product | Number of time stamp entries per gc worker thread | src/share/vm/runtime/globals.hpp | ||
GCTimeLimit | OpenJDK6 | uintx | runtime | 98 | product | Limit of the proportion of time spent in GC before an OutOfMemoryError is thrown (used with GCHeapFreeLimit) | src/share/vm/runtime/globals.hpp | |||
GCTimeRatio | OpenJDK6 | uintx | runtime | 99 | product | Adaptive size policy application time to GC time ratio | src/share/vm/runtime/globals.hpp | |||
GCWorkerDelayMillis | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: 0 | develop | Delay in scheduling GC workers (in milliseconds) | src/share/vm/runtime/globals.hpp | |||
GenerateArrayStoreCheck | OpenJDK6 | bool | c1 | true | develop | Generates code for array store checks | src/share/vm/c1/c1_globals.hpp | |||
GenerateCompilerNullChecks | OpenJDK6 | bool | runtime | true | develop | Generate explicit null checks for loads/stores/calls | src/share/vm/runtime/globals.hpp | |||
GenerateRangeChecks | OpenJDK6 | bool | runtime | true | develop | Generate range checks for array accesses | src/share/vm/runtime/globals.hpp | |||
GenerateSynchronizationCode | OpenJDK6 | bool | runtime | true | develop | generate locking/unlocking code for synchronized methods and monitors | src/share/vm/runtime/globals.hpp | |||
GuaranteedSafepointInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | product | Guarantee a safepoint (at least) every so many milliseconds (0 means none) | src/share/vm/runtime/globals.hpp | |||
GuaranteedSafepointInterval | OpenJDK6 | intx | runtime | NOT_EMBEDDED: 1000 | diagnostic | Guarantee a safepoint (at least) every so many milliseconds (0 means none) | src/share/vm/runtime/globals.hpp | |||
HandleAllocationLimit | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 1024 | notproduct | Threshold for HandleMark allocation when +TraceHandleAllocation is used | src/share/vm/runtime/globals.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | aix | ppc | 2*G | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | bsd | x86 | 2*G | define_pd_global | src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | bsd | zero | 2*G | define_pd_global | src/os_cpu/bsd_zero/vm/globals_bsd_zero.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | linux | ppc | 2*G | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | linux | sparc | CONST64(4)*G | define_pd_global | src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | linux | x86 | 2*G | define_pd_global | src/os_cpu/linux_x86/vm/globals_linux_x86.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | linux | zero | 2*G | define_pd_global | src/os_cpu/linux_zero/vm/globals_linux_zero.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | runtime | product_pd | OS specific low limit for heap base address | src/share/vm/runtime/globals.hpp | ||||
HeapBaseMinAddress | OpenJDK6 | uintx | solaris | sparc | 2*G | define_pd_global | src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | solaris | x86 | 2*G | define_pd_global | src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp | |||
HeapBaseMinAddress | OpenJDK6 | uintx | windows | x86 | 2*G | define_pd_global | src/os_cpu/windows_x86/vm/globals_windows_x86.hpp | |||
HeapDumpAfterFullGC | OpenJDK6 | bool | runtime | false | manageable | Dump heap to file after any major stop-the-world GC | src/share/vm/runtime/globals.hpp | |||
HeapDumpBeforeFullGC | OpenJDK6 | bool | runtime | false | manageable | Dump heap to file before any major stop-the-world GC | src/share/vm/runtime/globals.hpp | |||
HeapDumpOnOutOfMemoryError | OpenJDK6 | bool | runtime | false | manageable | Dump heap to file when java.lang.OutOfMemoryError is thrown | src/share/vm/runtime/globals.hpp | |||
HeapDumpPath | OpenJDK6 | ccstr | runtime | NULL | manageable | When HeapDumpOnOutOfMemoryError is on, the path (filename or directory) of the dump file (defaults to java_pid | src/share/vm/runtime/globals.hpp | |||
HeapDumpSegmentSize | OpenJDK6 | uintx | runtime | 1*G | develop | Approximate segment size when generating a segmented heap dump | src/share/vm/runtime/globals.hpp | |||
HeapFirstMaximumCompactionCount | OpenJDK6 | uintx | runtime | 3 | product | The collection count for the first maximum compaction | src/share/vm/runtime/globals.hpp | |||
HeapMaximumCompactionInterval | OpenJDK6 | uintx | runtime | 20 | product | How often should we maximally compact the heap (not allowing any dead space) | src/share/vm/runtime/globals.hpp | |||
HeapSizePerGCThread | OpenJDK6 | uintx | runtime | ScaleForWordSize(64*M) | product | Size of heap (bytes) per GC thread used in calculating the number of GC threads | src/share/vm/runtime/globals.hpp | |||
HotCallCountThreshold | OpenJDK6 | intx | c2 | 999999 | develop | large numbers of calls (per method invocation) force hotness | src/share/vm/opto/c2_globals.hpp | |||
HotCallProfitThreshold | OpenJDK6 | intx | c2 | 999999 | develop | highly profitable inlining opportunities force hotness | src/share/vm/opto/c2_globals.hpp | |||
HotCallTrivialSize | OpenJDK6 | intx | c2 | -1 | develop | trivial methods (no larger than this) force calls to be hot | src/share/vm/opto/c2_globals.hpp | |||
HotCallTrivialWork | OpenJDK6 | intx | c2 | -1 | develop | trivial execution time (no larger than this) forces hotness | src/share/vm/opto/c2_globals.hpp | |||
HugeMethodLimit | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 8000 | develop | Don't compile methods larger than this if +DontCompileHugeMethods | src/share/vm/runtime/globals.hpp | |||
ICMissHistogram | OpenJDK6 | bool | runtime | false | notproduct | Produce histogram of IC misses | src/share/vm/runtime/globals.hpp | |||
IEEEPrecision | OpenJDK6 | bool | x86 | true | develop | Enables IEEE precision (for INTEL only) | src/cpu/x86/vm/globals_x86.hpp | |||
INTPRESSURE | OpenJDK6 | intx | c2 | develop_pd | Number of integer LRG's that constitute high register pressure | src/share/vm/opto/c2_globals.hpp | ||||
INTPRESSURE | OpenJDK6 | intx | ppc | c2 | 25 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
INTPRESSURE | OpenJDK6 | intx | sparc | c2 | 48 | define_pd_global | // large register set | src/cpu/sparc/vm/c2_globals_sparc.hpp | ||
INTPRESSURE | OpenJDK6 | intx | x86 | c2 | 6 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
IdealizedNumerics | OpenJDK6 | bool | c2 | false | develop | Check performance difference allowing FP associativity and commutativity... | src/share/vm/opto/c2_globals.hpp | |||
IgnoreEmptyClassPaths | OpenJDK8 | bool | runtime | false | product | Ignore empty path elements in -classpath | src/share/vm/runtime/globals.hpp | |||
IgnoreLibthreadGPFault | OpenJDK6 | bool | runtime | false | develop | Suppress workaround for libthread GP fault | src/share/vm/runtime/globals.hpp | |||
IgnoreLockingAssertions | OpenJDK6 | bool | runtime | false | notproduct | disable locking assertions (for speed) | src/share/vm/runtime/globals.hpp | |||
IgnoreRewrites | OpenJDK6 | bool | runtime | false | develop | Suppress rewrites of bytecodes in the oopmap generator. This is unsafe! | src/share/vm/runtime/globals.hpp | |||
IgnoreUnrecognizedVMOptions | OpenJDK6 | bool | runtime | false | product | Ignore unrecognized VM options | src/share/vm/runtime/globals.hpp | |||
IgnoreUnverifiableClassesDuringDump | OpenJDK8 | Deprecated in JDK10 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Do not quit -Xshare:dump even if we encounter unverifiable classes. Just exclude them from the shared dictionary. | src/share/vm/runtime/globals.hpp | ||
ImplicitDiv0Checks | OpenJDK6 | bool | c1 | true | develop | Use implicit division by zero checks | src/share/vm/c1/c1_globals.hpp | |||
ImplicitNullCheckThreshold | OpenJDK6 | intx | c2 | 3 | develop | Don't do implicit null checks if NPE's in a method exceeds limit | src/share/vm/opto/c2_globals.hpp | |||
ImplicitNullChecks | OpenJDK6 | bool | runtime | develop_pd | Generate code for implicit null checks | src/share/vm/runtime/globals.hpp | ||||
ImplicitNullChecks | OpenJDK6 | bool | ppc | true | define_pd_global | // Generate code for implicit null checks. | src/cpu/ppc/vm/globals_ppc.hpp | |||
ImplicitNullChecks | OpenJDK6 | bool | sparc | true | define_pd_global | // Generate code for implicit null checks | src/cpu/sparc/vm/globals_sparc.hpp | |||
ImplicitNullChecks | OpenJDK6 | bool | x86 | true | define_pd_global | // Generate code for implicit null checks | src/cpu/x86/vm/globals_x86.hpp | |||
ImplicitNullChecks | OpenJDK6 | bool | zero | true | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
IncreaseFirstTierCompileThresholdAt | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: 50 | product | Increase the compile threshold for C1 compilation if the code cache is filled by the specified percentage | src/share/vm/runtime/globals.hpp | |||
IncrementalInline | OpenJDK7 | bool | c2 | true | product | do post parse inlining | src/share/vm/opto/c2_globals.hpp | |||
IndexSetWatch | OpenJDK6 | intx | c2 | 0 | notproduct | Trace all operations on this IndexSet (-1 means all, 0 none) | src/share/vm/opto/c2_globals.hpp | |||
InitialBootClassLoaderMetaspaceSize | OpenJDK8 | Deprecated in JDK15 Obsoleted in JDK16 Expired in JDK17 | uintx | runtime | NOT_LP64(2200*K) LP64_ONLY(4*M) | product | Initial size of the boot class loader data metaspace | src/share/vm/runtime/globals.hpp | ||
InitialCodeCacheSize | OpenJDK6 | intx | runtime | 160*K | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
InitialCodeCacheSize | OpenJDK6 | uintx | runtime | product_pd | Initial code cache size (in bytes) | src/share/vm/runtime/globals.hpp | ||||
InitialCodeCacheSize | OpenJDK6 | intx | ppc | c2 | 2048*K | define_pd_global | // Integral multiple of CodeCacheExpansionSize | src/cpu/ppc/vm/c2_globals_ppc.hpp | ||
InitialCodeCacheSize | OpenJDK6 | intx | sparc | c1 | 160*K | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
InitialCodeCacheSize | OpenJDK6 | intx | sparc | c2 | 1536*K | define_pd_global | // Integral multiple of CodeCacheExpansionSize | src/cpu/sparc/vm/c2_globals_sparc.hpp | ||
InitialCodeCacheSize | OpenJDK6 | intx | x86 | c1 | 160*K | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
InitialCodeCacheSize | OpenJDK6 | intx | x86 | c2 | 2304*K | define_pd_global | // Integral multiple of CodeCacheExpansionSize | src/cpu/x86/vm/c2_globals_x86.hpp | ||
InitialCodeCacheSize | OpenJDK6 | intx | zero | shark | 160*K | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
InitialHeapSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 0 | product | Initial heap size (in bytes); zero means use ergonomics | src/share/vm/runtime/globals.hpp | |||
InitialRAMFraction | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 64 | product | Fraction (1/n) of real memory used for initial heap size | src/share/vm/runtime/globals.hpp | ||
InitialSurvivorRatio | OpenJDK6 | uintx | runtime | 8 | product | Initial ratio of young generation/survivor space size | src/share/vm/runtime/globals.hpp | |||
InitialTenuringThreshold | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 7 | product | Initial value for tenuring threshold | src/share/vm/runtime/globals.hpp | |||
InitiatingHeapOccupancyPercent | OpenJDK6 | uintx | runtime | 45 | product | Percentage of the (entire) heap occupancy to start a concurrent GC cycle. It is used by GCs that trigger a concurrent GC cycle based on the occupancy of the entire heap, not just one of the generations (e.g., G1). A value of 0 denotes 'do constant GC cycles'. | src/share/vm/runtime/globals.hpp | |||
InlineAccessors | OpenJDK6 | bool | c2 | true | develop | inline accessor methods (get/set) | src/share/vm/opto/c2_globals.hpp | |||
InlineArrayCopy | OpenJDK6 | bool | runtime | true | develop | Inline arraycopy native that is known to be part of base library DLL | src/share/vm/runtime/globals.hpp | |||
InlineClassNatives | OpenJDK6 | bool | runtime | true | develop | Inline Class.isInstance, etc | src/share/vm/runtime/globals.hpp | |||
InlineDataFile | OpenJDK8 | ccstr | runtime | EMBEDDED_ONLY: NULL | product | File containing inlining replay information [default: ./inline_pid%p.log] (%p replaced with pid) | src/share/vm/runtime/globals.hpp | |||
InlineFrequencyCount | OpenJDK6 | Obsoleted in JDK18 Expired in JDK19 | intx | runtime | develop_pd | Count of call site execution necessary to trigger frequent inlining | src/share/vm/runtime/globals.hpp | |||
InlineFrequencyCount | OpenJDK6 | Obsoleted in JDK18 Expired in JDK19 | intx | ppc | 100 | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | |||
InlineFrequencyCount | OpenJDK6 | Obsoleted in JDK18 Expired in JDK19 | intx | sparc | 50 | define_pd_global | // we can use more inlining on the SPARC | src/cpu/sparc/vm/globals_sparc.hpp | ||
InlineFrequencyCount | OpenJDK6 | Obsoleted in JDK18 Expired in JDK19 | intx | x86 | 100 | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | |||
InlineFrequencyCount | OpenJDK6 | Obsoleted in JDK18 Expired in JDK19 | intx | zero | 100 | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | |||
InlineFrequencyRatio | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 20 | develop | Ratio of call site execution to caller method invocation | src/share/vm/runtime/globals.hpp | |||
InlineIntrinsics | OpenJDK6 | bool | runtime | develop_pd | Inline intrinsics that can be statically resolved | src/share/vm/runtime/globals.hpp | ||||
InlineIntrinsics | OpenJDK6 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
InlineIntrinsics | OpenJDK6 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
InlineIntrinsics | OpenJDK6 | bool | sparc | c2 | false | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
InlineIntrinsics | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
InlineIntrinsics | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
InlineIntrinsics | OpenJDK6 | bool | zero | shark | false | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
InlineMathNatives | OpenJDK6 | bool | runtime | true | develop | Inline SinD, CosD, etc. | src/share/vm/runtime/globals.hpp | |||
InlineMethodsWithExceptionHandlers | OpenJDK6 | bool | c1 | true | develop | Inline methods containing exception handlers (NOTE: does not work with current backend) | src/share/vm/c1/c1_globals.hpp | |||
InlineNIOCheckIndex | OpenJDK6 | bool | c1 | true | develop | Intrinsify java.nio.Buffer.checkIndex | src/share/vm/c1/c1_globals.hpp | |||
InlineNatives | OpenJDK6 | bool | runtime | true | develop | Inline natives that are known to be part of base library DLL | src/share/vm/runtime/globals.hpp | |||
InlineObjectCopy | OpenJDK6 | bool | c2 | true | develop | inline Object.clone and Arrays.copyOf[Range] intrinsics | src/share/vm/opto/c2_globals.hpp | |||
InlineObjectHash | OpenJDK6 | bool | runtime | true | develop | Inline Object::hashCode() native that is known to be part of base library DLL | src/share/vm/runtime/globals.hpp | |||
InlineReflectionGetCallerClass | OpenJDK6 | bool | c2 | true | develop | inline sun.reflect.Reflection.getCallerClass(), known to be part of base library DLL | src/share/vm/opto/c2_globals.hpp | |||
InlineSmallCode | OpenJDK6 | intx | runtime | product_pd | Only inline already compiled methods if their code size is less than this | src/share/vm/runtime/globals.hpp | ||||
InlineSmallCode | OpenJDK6 | intx | ppc | 1500 | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
InlineSmallCode | OpenJDK6 | intx | sparc | 1500 | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
InlineSmallCode | OpenJDK6 | intx | x86 | 1000 | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
InlineSmallCode | OpenJDK6 | intx | zero | 1000 | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
InlineSynchronizedMethods | OpenJDK6 | bool | c1 | true | product | Inline synchronized methods | src/share/vm/c1/c1_globals.hpp | |||
InlineThreadNatives | OpenJDK6 | bool | runtime | true | develop | Inline Thread.currentThread, etc | src/share/vm/runtime/globals.hpp | |||
InlineThrowCount | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 50 | develop | Force inlining of interpreted methods that throw this often | src/share/vm/runtime/globals.hpp | |||
InlineThrowMaxSize | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 200 | develop | Force inlining of throwing methods smaller than this | src/share/vm/runtime/globals.hpp | |||
InlineUnsafeOps | OpenJDK6 | bool | runtime | true | develop | Inline memory ops (native methods) from sun.misc.Unsafe | src/share/vm/runtime/globals.hpp | |||
InlineWarmCalls | OpenJDK6 | bool | c2 | false | develop | Use a heat-based priority queue to govern inlining | src/share/vm/opto/c2_globals.hpp | |||
Inline | OpenJDK6 | bool | runtime | true | product | Enable inlining | src/share/vm/runtime/globals.hpp | |||
InsertEndGroupPPC64 | OpenJDK7 | bool | ppc | false | product | Insert EndGroup instructions to optimize for Power6. | src/cpu/ppc/vm/globals_ppc.hpp | |||
InsertMemBarAfterArraycopy | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | c2 | true | product | Insert memory barrier after arraycopy call | src/share/vm/opto/c2_globals.hpp | ||
InstallMethods | OpenJDK6 | bool | c1 | true | develop | Install methods at the end of successful compilations | src/share/vm/c1/c1_globals.hpp | |||
InstructionCountCutoff | OpenJDK6 | intx | c1 | 37000 | develop | If GraphBuilder adds this many instructions, bails out | src/share/vm/c1/c1_globals.hpp | |||
InterceptOSException | OpenJDK6 | bool | runtime | false | develop | Start debugger when an implicit OS (e.g. NULL) exception happens | src/share/vm/runtime/globals.hpp | |||
InteriorEntryAlignment | OpenJDK6 | intx | c2 | product_pd | Code alignment for interior entry points in generated code (in bytes) | src/share/vm/opto/c2_globals.hpp | ||||
InteriorEntryAlignment | OpenJDK6 | intx | ppc | c2 | 16 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
InteriorEntryAlignment | OpenJDK6 | intx | sparc | c2 | 16 | define_pd_global | // = CodeEntryAlignment | src/cpu/sparc/vm/c2_globals_sparc.hpp | ||
InteriorEntryAlignment | OpenJDK6 | intx | x86 | c2 | 4 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
InterpreterProfilePercentage | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 33 | product | NON_TIERED number of method invocations/branches (expressed as % of CompileThreshold) before profiling in the interpreter | src/share/vm/runtime/globals.hpp | |||
JNIDetachReleasesMonitors | OpenJDK6 | bool | runtime | true | product | JNI DetachCurrentThread releases monitors owned by thread | src/share/vm/runtime/globals.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | aix | ppc | 8192 | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | bsd | x86 | 8192 | define_pd_global | src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | bsd | zero | 8192 | define_pd_global | src/os_cpu/bsd_zero/vm/globals_bsd_zero.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | linux | ppc | 8192 | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | linux | sparc | 12288 | define_pd_global | src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | linux | x86 | 8192 | define_pd_global | src/os_cpu/linux_x86/vm/globals_linux_x86.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | linux | zero | 8192 | define_pd_global | src/os_cpu/linux_zero/vm/globals_linux_zero.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | runtime | develop_pd | Stack space (bytes) required for JVM_InvokeMethod to complete | src/share/vm/runtime/globals.hpp | ||||
JVMInvokeMethodSlack | OpenJDK6 | uintx | solaris | sparc | 12288 | define_pd_global | src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | solaris | x86 | 10*K | define_pd_global | src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp | |||
JVMInvokeMethodSlack | OpenJDK6 | uintx | windows | x86 | 8192 | define_pd_global | src/os_cpu/windows_x86/vm/globals_windows_x86.hpp | |||
JavaMonitorsInStackTrace | OpenJDK6 | bool | runtime | true | product | Print information about Java monitor locks when the stacks are dumped | src/share/vm/runtime/globals.hpp | |||
JavaPriority10_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority1_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority2_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority3_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority4_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority5_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority6_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority7_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority8_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
JavaPriority9_To_OSPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | Map Java priorities to OS priorities | src/share/vm/runtime/globals.hpp | |||
LIRFillDelaySlots | OpenJDK6 | Obsoleted in JDK15 Expired in JDK16 | bool | c1 | product_pd | fill delays on on SPARC with LIR | src/share/vm/c1/c1_globals.hpp | |||
LIRFillDelaySlots | OpenJDK6 | Obsoleted in JDK15 Expired in JDK16 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | ||
LIRFillDelaySlots | OpenJDK6 | Obsoleted in JDK15 Expired in JDK16 | bool | x86 | c1 | false | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | ||
LIRTraceExecution | OpenJDK6 | bool | c1 | false | develop | add LIR code which logs the execution of blocks | src/share/vm/c1/c1_globals.hpp | |||
LIRTracePeephole | OpenJDK6 | bool | c1 | false | develop | Trace peephole optimizer | src/share/vm/c1/c1_globals.hpp | |||
LargePageHeapSizeThreshold | OpenJDK6 | uintx | runtime | 128*M | product | Use large pages if maximum heap is at least this big | src/share/vm/runtime/globals.hpp | |||
LargePageSizeInBytes | OpenJDK6 | uintx | runtime | 0 | product | Large page size (0 to let VM choose the page size) | src/share/vm/runtime/globals.hpp | |||
LargePagesIndividualAllocationInjectError | OpenJDK6 | bool | runtime | false | develop | Fail large pages individual allocation | src/share/vm/runtime/globals.hpp | |||
LazyBootClassLoader | OpenJDK6 | bool | runtime | true | product | Enable/disable lazy opening of boot class path entries | src/share/vm/runtime/globals.hpp | |||
LiveNodeCountInliningCutoff | OpenJDK7 | intx | c2 | 40000 | product | max number of live nodes in a method | src/share/vm/opto/c2_globals.hpp | |||
LoadExecStackDllInVMThread | OpenJDK7 | bool | linux | true | product | Load DLLs with executable-stack attribute in the VM Thread | src/os/linux/vm/globals_linux.hpp | |||
LoadLineNumberTables | OpenJDK6 | bool | runtime | true | develop | Tell whether the class file parser loads line number tables | src/share/vm/runtime/globals.hpp | |||
LoadLocalVariableTables | OpenJDK6 | bool | runtime | true | develop | Tell whether the class file parser loads local variable tables | src/share/vm/runtime/globals.hpp | |||
LoadLocalVariableTypeTables | OpenJDK6 | bool | runtime | true | develop | Tell whether the class file parser loads local variable type tables | src/share/vm/runtime/globals.hpp | |||
LoadPollAddressFromThread | OpenJDK7 | bool | ppc | false | product | Load polling page address from thread object (required for per-thread safepoints on platforms != IA64) | src/cpu/ppc/vm/globals_ppc.hpp | |||
LogCompilation | OpenJDK6 | bool | runtime | false | diagnostic | Log compilation activity in detail to LogFile | src/share/vm/runtime/globals.hpp | |||
LogEventsBufferEntries | OpenJDK6 | uintx | runtime | 10 | diagnostic | Number of ring buffer event logs | src/share/vm/runtime/globals.hpp | |||
LogEvents | OpenJDK6 | bool | runtime | true | diagnostic | Enable the various ring buffer event logs | src/share/vm/runtime/globals.hpp | |||
LogFile | OpenJDK6 | ccstr | runtime | NULL | diagnostic | If LogVMOutput or LogCompilation is on, save VM output to this file [default: ./hotspot_pid%p.log] (%p replaced with pid) | src/share/vm/runtime/globals.hpp | |||
LogSweeper | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | notproduct | Keep a ring buffer of sweeper activity | src/share/vm/runtime/globals.hpp | |||
LogVMOutput | OpenJDK6 | bool | runtime | false | diagnostic | Save VM output to LogFile | src/share/vm/runtime/globals.hpp | |||
LongCompileThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 50 | develop | Used with +TraceLongCompiles | src/share/vm/runtime/globals.hpp | |||
LoopLimitCheck | OpenJDK6 | bool | c2 | true | diagnostic | Generate a loop limits check for overflow | src/share/vm/opto/c2_globals.hpp | |||
LoopMaxUnroll | OpenJDK7 | intx | c2 | 16 | product | Maximum number of unrolls for main loop | src/share/vm/opto/c2_globals.hpp | |||
LoopOptsCount | OpenJDK6 | intx | c2 | 43 | product | Set level of loop optimization for tier 1 compiles | src/share/vm/opto/c2_globals.hpp | |||
LoopUnrollLimit | OpenJDK6 | intx | c2 | product_pd | Unroll loop bodies with node count less than this | src/share/vm/opto/c2_globals.hpp | ||||
LoopUnrollLimit | OpenJDK6 | intx | ppc | c2 | 60 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
LoopUnrollLimit | OpenJDK6 | intx | sparc | c2 | 60 | define_pd_global | // Design center runs on 1.3.1 | src/cpu/sparc/vm/c2_globals_sparc.hpp | ||
LoopUnrollLimit | OpenJDK6 | intx | x86 | c2 | 50 | define_pd_global | // Design center runs on 1.3.1 | src/cpu/x86/vm/c2_globals_x86.hpp | ||
LoopUnrollMin | OpenJDK6 | intx | c2 | 4 | product | Minimum number of unroll loop bodies before checking progress of rounds of unroll,optimize,.. | src/share/vm/opto/c2_globals.hpp | |||
LoopUnswitching | OpenJDK6 | bool | c2 | true | product | Enable loop unswitching (a form of invariant test hoisting) | src/share/vm/opto/c2_globals.hpp | |||
MallocCatchPtr | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | develop | Hit breakpoint when mallocing/freeing this pointer | src/share/vm/runtime/globals.hpp | |||
MallocMaxTestWords | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: 0 | diagnostic | If non-zero, maximum number of words that malloc/realloc can allocate (for testing only) | src/share/vm/runtime/globals.hpp | |||
MallocVerifyInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | diagnostic | If non-zero, verify C heap after every N calls to malloc/realloc/free | src/share/vm/runtime/globals.hpp | |||
MallocVerifyStart | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | diagnostic | If non-zero, start verifying C heap after Nth call to malloc/realloc/free | src/share/vm/runtime/globals.hpp | |||
ManagementServer | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Create JMX Management Server | src/share/vm/runtime/globals.hpp | |||
MarkStackSizeMax | OpenJDK6 | uintx | runtime | NOT_LP64(4*M) LP64_ONLY(512*M) | product | Maximum size of marking stack | src/share/vm/runtime/globals.hpp | |||
MarkStackSize | OpenJDK6 | uintx | runtime | NOT_LP64(32*K) LP64_ONLY(4*M) | product | Size of marking stack | src/share/vm/runtime/globals.hpp | |||
MarkSweepAlwaysCompactCount | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 4 | product | How often should we fully compact the heap (ignoring the dead space parameters) | src/share/vm/runtime/globals.hpp | |||
MarkSweepDeadRatio | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 5 | product | Percentage (0-100) of the old gen allowed as dead wood. Serial mark sweep treats this as both the minimum and maximum value. CMS uses this value only if it falls back to mark sweep. Par compact uses a variable scale based on the density of the generation and treats this as the maximum value when the heap is either completely full or completely empty. Par compact also has a smaller default value; see arguments.cpp. | src/share/vm/runtime/globals.hpp | |||
MaxBCEAEstimateLevel | OpenJDK6 | intx | runtime | 5 | product | Maximum number of nested calls that are analyzed by BC EA | src/share/vm/runtime/globals.hpp | |||
MaxBCEAEstimateSize | OpenJDK6 | intx | runtime | 150 | product | Maximum bytecode size of a method to be analyzed by BC EA | src/share/vm/runtime/globals.hpp | |||
MaxDirectMemorySize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 0 | product | Maximum total size of NIO direct-buffer allocations | src/share/vm/runtime/globals.hpp | |||
MaxElementPrintSize | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 256 | notproduct | maximum number of elements to print | src/share/vm/runtime/globals.hpp | |||
MaxFDLimit | OpenJDK6 | bool | runtime | true | product | Bump the number of file descriptors to maximum in Solaris | src/share/vm/runtime/globals.hpp | |||
MaxForceInlineLevel | OpenJDK7 | intx | runtime | EMBEDDED_ONLY: 100 | develop | maximum number of nested calls that are forced for inlining (using CompilerOracle or marked w/ @ForceInline) | src/share/vm/runtime/globals.hpp | |||
MaxGCMinorPauseMillis | OpenJDK6 | Deprecated in JDK8 Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | max_uintx | product | Adaptive size policy maximum GC minor pause time goal in millisecond | src/share/vm/runtime/globals.hpp | ||
MaxGCPauseMillis | OpenJDK6 | uintx | runtime | max_uintx | product | Adaptive size policy maximum GC pause time goal in millisecond, or (G1 Only) the maximum GC time per MMU time slice | src/share/vm/runtime/globals.hpp | |||
MaxHeapFreeRatio | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 70 | manageable | The maximum percentage of heap free after GC to avoid shrinking. For most GCs this applies to the old generation. In G1 and ParallelGC it applies to the whole heap. | src/share/vm/runtime/globals.hpp | |||
MaxHeapSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: ScaleForWordSize(96*M) | product | Maximum heap size (in bytes) | src/share/vm/runtime/globals.hpp | |||
MaxInlineLevel | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 9 | product | maximum number of nested calls that are inlined | src/share/vm/runtime/globals.hpp | |||
MaxInlineSize | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 35 | product | The maximum bytecode size of a method to be inlined | src/share/vm/runtime/globals.hpp | |||
MaxInterpretedSearchLength | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 3 | develop | The maximum number of interpreted frames to skip when searching for recompilee | src/share/vm/runtime/globals.hpp | |||
MaxJNILocalCapacity | OpenJDK8 | intx | runtime | 65536 | product | Maximum allowable local JNI handle capacity to EnsureLocalCapacity() and PushLocalFrame(), where <= 0 is unlimited, default: 65536 | src/share/vm/runtime/globals.hpp | |||
MaxJavaStackTraceDepth | OpenJDK6 | intx | runtime | 1024 | product | The maximum number of lines in the stack trace for Java exceptions (0 means all) | src/share/vm/runtime/globals.hpp | |||
MaxJumpTableSize | OpenJDK6 | intx | c2 | 65000 | product | Maximum number of targets in a generated jump table | src/share/vm/opto/c2_globals.hpp | |||
MaxJumpTableSparseness | OpenJDK6 | intx | c2 | 5 | product | Maximum sparseness for jumptables | src/share/vm/opto/c2_globals.hpp | |||
MaxLabelRootDepth | OpenJDK6 | intx | c2 | 1100 | product | Maximum times call Label_Root to prevent stack overflow | src/share/vm/opto/c2_globals.hpp | |||
MaxLoopPad | OpenJDK6 | intx | c2 | (OptoLoopAlignment-1) | product | Align a loop if padding size in bytes is less or equal to this value | src/share/vm/opto/c2_globals.hpp | |||
MaxMetaspaceExpansion | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: ScaleForWordSize(4*M) | product | The maximum expansion of Metaspace without full GC (in bytes) | src/share/vm/runtime/globals.hpp | |||
MaxMetaspaceFreeRatio | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: 70 | product | The maximum percentage of Metaspace free after GC to avoid shrinking | src/share/vm/runtime/globals.hpp | |||
MaxMetaspaceSize | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: max_uintx | product | Maximum size of Metaspaces (in bytes) | src/share/vm/runtime/globals.hpp | |||
MaxNewSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: max_uintx | product | Maximum new generation size (in bytes), max_uintx means set ergonomically | src/share/vm/runtime/globals.hpp | |||
MaxNodeLimit | OpenJDK6 | intx | c2 | 80000 | product | Maximum number of nodes | src/share/vm/opto/c2_globals.hpp | |||
MaxNodeLimit | OpenJDK6 | intx | shark | 65000 | product | Maximum number of nodes | src/share/vm/shark/shark_globals.hpp | |||
MaxRAMFraction | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 4 | product | Maximum fraction (1/n) of real memory used for maximum heap size | src/share/vm/runtime/globals.hpp | ||
MaxRAM | OpenJDK6 | uint64_t | runtime | product_pd | Real memory size (in bytes) used to set maximum heap size | src/share/vm/runtime/globals.hpp | ||||
MaxRAM | OpenJDK6 | uint64_t | ppc | c2 | 4ULL*G | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
MaxRAM | OpenJDK6 | uint64_t | sparc | c1 | 1ULL*G | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
MaxRAM | OpenJDK6 | uint64_t | sparc | c2 | 4ULL*G | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
MaxRAM | OpenJDK6 | uint64_t | x86 | c1 | 1ULL*G | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
MaxRAM | OpenJDK6 | uint64_t | x86 | c2 | 4ULL*G | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
MaxRAM | OpenJDK6 | uint64_t | zero | shark | 1ULL*G | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
MaxRecompilationSearchLength | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 10 | develop | The maximum number of frames to inspect when searching for recompilee | src/share/vm/runtime/globals.hpp | |||
MaxRecursiveInlineLevel | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1 | product | maximum number of nested recursive calls that are inlined | src/share/vm/runtime/globals.hpp | |||
MaxSubklassPrintSize | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 4 | notproduct | maximum number of subklasses to print when printing klass | src/share/vm/runtime/globals.hpp | |||
MaxTenuringThreshold | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 15 | product | Maximum value for tenuring threshold | src/share/vm/runtime/globals.hpp | |||
MaxTrivialSize | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 6 | product | The maximum bytecode size of a trivial method to be inlined | src/share/vm/runtime/globals.hpp | |||
MaxVectorSize | OpenJDK7 | intx | c2 | 32 | product | Max vector size in bytes, actual size could be less depending on elements type | src/share/vm/opto/c2_globals.hpp | |||
MaxVirtMemFraction | OpenJDK7 | uintx | runtime | 2 | develop | Maximum fraction (1/n) of virtual memory used for ergonomically determining maximum heap size | src/share/vm/runtime/globals.hpp | |||
MemProfilingInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 500 | notproduct | Time between each invocation of the MemProfiler | src/share/vm/runtime/globals.hpp | |||
MemProfiling | OpenJDK6 | bool | runtime | false | develop | Write memory usage profiling to log file | src/share/vm/runtime/globals.hpp | |||
MetadataAllocationFailALotInterval | OpenJDK8 | uintx | runtime | 1000 | develop | Metadata allocation failure a lot interval | src/share/vm/runtime/globals.hpp | |||
MetadataAllocationFailALot | OpenJDK8 | bool | runtime | false | develop | Fail metadata allocations at intervals controlled by MetadataAllocationFailALotInterval | src/share/vm/runtime/globals.hpp | |||
MetaspaceSize | OpenJDK8 | uintx | runtime | ScaleForWordSize(4*M) | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
MetaspaceSize | OpenJDK8 | uintx | runtime | product_pd | Initial size of Metaspaces (in bytes) | src/share/vm/runtime/globals.hpp | ||||
MetaspaceSize | OpenJDK8 | uintx | ppc | c2 | ScaleForWordSize(16*M) | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
MetaspaceSize | OpenJDK8 | uintx | sparc | c1 | 12*M | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
MetaspaceSize | OpenJDK8 | uintx | sparc | c2 | ScaleForWordSize(16*M) | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
MetaspaceSize | OpenJDK8 | uintx | x86 | c1 | 12*M | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
MetaspaceSize | OpenJDK8 | uintx | x86 | c2 | ScaleForWordSize(16*M) | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
MetaspaceSize | OpenJDK8 | uintx | zero | shark | 12*M | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
MethodFlushing | OpenJDK6 | bool | runtime | true | product | Reclamation of zombie and not-entrant methods | src/share/vm/runtime/globals.hpp | |||
MethodHistogramCutoff | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 100 | develop | The cutoff value for method invocation histogram (+CountCalls) | src/share/vm/runtime/globals.hpp | |||
MinHeapDeltaBytes | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: ScaleForWordSize(128*K) | product | The minimum change in heap space due to GC (in bytes) | src/share/vm/runtime/globals.hpp | |||
MinHeapFreeRatio | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 40 | manageable | The minimum percentage of heap free after GC to avoid expansion. For most GCs this applies to the old generation. In G1 and ParallelGC it applies to the whole heap. | src/share/vm/runtime/globals.hpp | |||
MinInliningThreshold | OpenJDK6 | Deprecated in JDK18 Obsoleted in JDK19 Expired in JDK20 | intx | runtime | EMBEDDED_ONLY: 250 | product | The minimum invocation count a method needs to have to be inlined | src/share/vm/runtime/globals.hpp | ||
MinJumpTableSize | OpenJDK6 | intx | c2 | product_pd | Minimum number of targets in a generated jump table | src/share/vm/opto/c2_globals.hpp | ||||
MinJumpTableSize | OpenJDK6 | intx | ppc | c2 | 10 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
MinJumpTableSize | OpenJDK6 | intx | sparc | c2 | 5 | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
MinJumpTableSize | OpenJDK6 | intx | x86 | c2 | 10 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
MinMetaspaceExpansion | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: ScaleForWordSize(256*K) | product | The minimum expansion of Metaspace (in bytes) | src/share/vm/runtime/globals.hpp | |||
MinMetaspaceFreeRatio | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: 40 | product | The minimum percentage of Metaspace free after GC to avoid expansion | src/share/vm/runtime/globals.hpp | |||
MinOopMapAllocation | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 8 | develop | Minimum number of OopMap entries in an OopMapSet | src/share/vm/runtime/globals.hpp | |||
MinRAMFraction | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 2 | product | Minimum fraction (1/n) of real memory used for maxmimum heap size on systems with small physical memory size | src/share/vm/runtime/globals.hpp | ||
MinSleepInterval | OpenJDK6 | Deprecated in JDK9 Obsoleted in JDK10 Expired in JDK11 | intx | runtime | EMBEDDED_ONLY: 1 | develop | Minimum sleep() interval (milliseconds) when ConvertSleepToYield is off (used for Solaris) | src/share/vm/runtime/globals.hpp | ||
MinSurvivorRatio | OpenJDK6 | uintx | runtime | 3 | product | Minimum ratio of young generation/survivor space size | src/share/vm/runtime/globals.hpp | |||
MinTLABSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 2*K | product | Minimum allowed TLAB size (in bytes) | src/share/vm/runtime/globals.hpp | |||
MonitorBound | OpenJDK6 | Deprecated in JDK14 Obsoleted in JDK15 Expired in JDK16 | intx | runtime | 0 | product | Bound Monitor population | src/share/vm/runtime/globals.hpp | ||
MonitorInUseLists | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | false | product | Track Monitors for Deflation | src/share/vm/runtime/globals.hpp | ||
MonomorphicArrayCheck | OpenJDK6 | bool | c2 | true | develop | Uncommon-trap array store checks that require full type check | src/share/vm/opto/c2_globals.hpp | |||
MultiArrayExpandLimit | OpenJDK6 | intx | c2 | 6 | product | Maximum number of individual allocations in an inline-expanded multianewarray instruction | src/share/vm/opto/c2_globals.hpp | |||
MustCallLoadClassInternal | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK11 Expired in JDK12 | bool | runtime | false | product | Call loadClassInternal() rather than loadClass() | src/share/vm/runtime/globals.hpp | ||
NMethodSizeLimit | OpenJDK6 | intx | c1 | (64*K)*wordSize | develop | Maximum size of a compiled method. | src/share/vm/c1/c1_globals.hpp | |||
NUMAChunkResizeWeight | OpenJDK6 | uintx | runtime | 20 | product | Percentage (0-100) used to weigh the current sample when computing exponentially decaying average for AdaptiveNUMAChunkSizing | src/share/vm/runtime/globals.hpp | |||
NUMAInterleaveGranularity | OpenJDK6 | uintx | runtime | 2*M | product | Granularity to use for NUMA interleaving on Windows OS | src/share/vm/runtime/globals.hpp | |||
NUMAPageScanRate | OpenJDK6 | Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 256 | product | Maximum number of pages to include in the page scan procedure | src/share/vm/runtime/globals.hpp | ||
NUMASpaceResizeRate | OpenJDK6 | uintx | runtime | 1*G | product | Do not reallocate more than this amount per collection | src/share/vm/runtime/globals.hpp | |||
NUMAStats | OpenJDK6 | bool | runtime | false | product | Print NUMA stats in detailed heap information | src/share/vm/runtime/globals.hpp | |||
NativeMemoryTracking | OpenJDK7 | ccstr | runtime | off | product | Native memory tracking options | src/share/vm/runtime/globals.hpp | |||
NativeMonitorFlags | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | intx | runtime | 0 | experimental | (Unstable) | src/share/vm/runtime/globals.hpp | ||
NativeMonitorSpinLimit | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | intx | runtime | 20 | experimental | (Unstable) | src/share/vm/runtime/globals.hpp | ||
NativeMonitorTimeout | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | intx | runtime | -1 | experimental | (Unstable) | src/share/vm/runtime/globals.hpp | ||
NeedsDeoptSuspend | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | runtime | product_pd | True for register window machines (sparc/ia64) | src/share/vm/runtime/globals.hpp | |||
NeedsDeoptSuspend | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | ppc | false | define_pd_global | // Only register window machines need this. | src/cpu/ppc/vm/globals_ppc.hpp | ||
NeedsDeoptSuspend | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | sparc | true | define_pd_global | // register window machines need this | src/cpu/sparc/vm/globals_sparc.hpp | ||
NeedsDeoptSuspend | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | x86 | false | define_pd_global | // only register window machines need this | src/cpu/x86/vm/globals_x86.hpp | ||
NeedsDeoptSuspend | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | zero | false | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | |||
NestedInliningSizeRatio | OpenJDK6 | intx | c1 | 90 | develop | Percentage of prev. allowed inline size in recursive inlining | src/share/vm/c1/c1_globals.hpp | |||
NeverActAsServerClassMachine | OpenJDK6 | bool | runtime | product_pd | Never act like a server-class machine | src/share/vm/runtime/globals.hpp | ||||
NeverActAsServerClassMachine | OpenJDK6 | bool | ppc | c2 | false | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
NeverActAsServerClassMachine | OpenJDK6 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
NeverActAsServerClassMachine | OpenJDK6 | bool | sparc | c2 | false | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
NeverActAsServerClassMachine | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
NeverActAsServerClassMachine | OpenJDK6 | bool | x86 | c2 | false | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
NeverActAsServerClassMachine | OpenJDK6 | bool | zero | shark | true | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
NeverTenure | OpenJDK6 | bool | runtime | false | product | Never tenure objects in eden, may tenure on overflow (ParallelGC only) | src/share/vm/runtime/globals.hpp | |||
NewCodeParameter | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | develop | Testing Only: Create a dedicated integer parameter before putback | src/share/vm/runtime/globals.hpp | |||
NewRatio | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 2 | product | Ratio of old/new generation sizes | src/share/vm/runtime/globals.hpp | |||
NewRatio | OpenJDK6 | uintx | zero | shark | 12 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
NewSizeThreadIncrease | OpenJDK6 | intx | runtime | 4*K | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
NewSizeThreadIncrease | OpenJDK6 | uintx | runtime | product_pd | Additional size added to desired new generation size per non-daemon thread (in bytes) | src/share/vm/runtime/globals.hpp | ||||
NewSizeThreadIncrease | OpenJDK6 | intx | ppc | c2 | ScaleForWordSize(4*K) | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
NewSizeThreadIncrease | OpenJDK6 | intx | sparc | c1 | 16*K | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
NewSizeThreadIncrease | OpenJDK6 | intx | sparc | c2 | ScaleForWordSize(4*K) | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
NewSizeThreadIncrease | OpenJDK6 | intx | x86 | c1 | 4*K | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
NewSizeThreadIncrease | OpenJDK6 | intx | x86 | c2 | 4*K | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
NewSizeThreadIncrease | OpenJDK6 | intx | zero | shark | 4*K | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
NewSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: ScaleForWordSize(1*M) | product | Initial new generation size (in bytes) | src/share/vm/runtime/globals.hpp | |||
NmethodSweepActivity | OpenJDK8 | intx | runtime | EMBEDDED_ONLY: 10 | product | Removes cold nmethods from code cache if > 0. Higher values result in more aggressive sweeping | src/share/vm/runtime/globals.hpp | |||
NmethodSweepCheckInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 5 | product | Compilers wake up every n seconds to possibly sweep nmethods | src/share/vm/runtime/globals.hpp | |||
NmethodSweepFraction | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 16 | product | Number of invocations of sweeper to cover all nmethods | src/share/vm/runtime/globals.hpp | |||
NoYieldsInMicrolock | OpenJDK6 | bool | runtime | false | develop | Disable yields in microlock | src/share/vm/runtime/globals.hpp | |||
NodeCountInliningCutoff | OpenJDK6 | intx | c2 | 18000 | develop | If parser node generation exceeds limit stop inlining | src/share/vm/opto/c2_globals.hpp | |||
NodeCountInliningStep | OpenJDK6 | intx | c2 | 1000 | develop | Target size of warm calls inlined between optimization passes | src/share/vm/opto/c2_globals.hpp | |||
NodeLimitFudgeFactor | OpenJDK6 | intx | c2 | 2000 | product | Fudge Factor for certain optimizations | src/share/vm/opto/c2_globals.hpp | |||
NumberOfGCLogFiles | OpenJDK6 | uintx | runtime | 0 | product | Number of gclog files in rotation (default: 0, no rotation) | src/share/vm/runtime/globals.hpp | |||
NumberOfLoopInstrToAlign | OpenJDK6 | intx | c2 | 4 | product | Number of first instructions in a loop to align | src/share/vm/opto/c2_globals.hpp | |||
OSROnlyBCI | OpenJDK6 | intx | runtime | -1 | develop | OSR only at this bci. Negative values mean exclude that bci | src/share/vm/runtime/globals.hpp | |||
ObjArrayMarkingStride | OpenJDK6 | uintx | runtime | 512 | develop | Number of object array elements to push onto the marking stack before pushing a continuation entry | src/share/vm/runtime/globals.hpp | |||
ObjectAlignmentInBytes | OpenJDK6 | intx | runtime | 8 | lp64_product | Default object alignment in bytes, 8 is minimum | src/share/vm/runtime/globals.hpp | |||
ObjectCountCutOffPercent | OpenJDK7 | double | runtime | 0.5 | experimental | The percentage of the used heap that the instances of a class must occupy for the class to generate a trace event | src/share/vm/runtime/globals.hpp | |||
OldPLABSize | OpenJDK6 | uintx | runtime | 1024 | product | Size of old gen promotion LAB's (in HeapWords) | src/share/vm/runtime/globals.hpp | |||
OldPLABWeight | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 50 | product | Percentage (0-100) used to weight the current sample when computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim | src/share/vm/runtime/globals.hpp | ||
OldSize | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | uintx | runtime | EMBEDDED_ONLY: ScaleForWordSize(4*M) | product | Initial tenured generation size (in bytes) | src/share/vm/runtime/globals.hpp | ||
OmitStackTraceInFastThrow | OpenJDK6 | bool | runtime | true | product | Omit backtraces for some 'hot' exceptions in optimized code | src/share/vm/runtime/globals.hpp | |||
OnError | OpenJDK6 | ccstrlist | runtime | product | Run user-defined commands on fatal error; see VMError.cpp for examples | src/share/vm/runtime/globals.hpp | ||||
OnOutOfMemoryError | OpenJDK6 | ccstrlist | runtime | product | Run user-defined commands on first java.lang.OutOfMemoryError | src/share/vm/runtime/globals.hpp | ||||
OnStackReplacePercentage | OpenJDK6 | intx | runtime | 0 | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
OnStackReplacePercentage | OpenJDK6 | intx | runtime | product_pd | NON_TIERED number of method invocations/branches (expressed as % of CompileThreshold) before (re-)compiling OSR code | src/share/vm/runtime/globals.hpp | ||||
OnStackReplacePercentage | OpenJDK6 | intx | ppc | c2 | 140 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
OnStackReplacePercentage | OpenJDK6 | intx | sparc | c1 | 1400 | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
OnStackReplacePercentage | OpenJDK6 | intx | sparc | c2 | 140 | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
OnStackReplacePercentage | OpenJDK6 | intx | x86 | c1 | 933 | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
OnStackReplacePercentage | OpenJDK6 | intx | x86 | c2 | 140 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
OnStackReplacePercentage | OpenJDK6 | intx | zero | shark | 933 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
OptimizeExpensiveOps | OpenJDK7 | bool | c2 | true | diagnostic | Find best control for expensive operations | src/share/vm/opto/c2_globals.hpp | |||
OptimizeFill | OpenJDK6 | bool | c2 | true PPC64_ONLY(&& false) | product | convert fill/copy loops into intrinsic | src/share/vm/opto/c2_globals.hpp | |||
OptimizeIfOps | OpenJDK6 | bool | c1 | true | develop | Optimize multiple IfOps | src/share/vm/c1/c1_globals.hpp | |||
OptimizePollingPageLocation | OpenJDK7 | bool | aix | true | define_pd_global | src/os/aix/vm/globals_aix.hpp | ||||
OptimizePtrCompare | OpenJDK6 | bool | c2 | true | product | Use escape analysis to optimize pointers compare | src/share/vm/opto/c2_globals.hpp | |||
OptimizeSinglePrecision | OpenJDK6 | bool | sparc | c1 | false | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
OptimizeSinglePrecision | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
OptimizeStringConcat | OpenJDK6 | bool | c2 | true | product | Optimize the construction of Strings by StringBuilder | src/share/vm/opto/c2_globals.hpp | |||
OptimizeUnsafes | OpenJDK6 | bool | c1 | true | develop | Optimize raw unsafe ops | src/share/vm/c1/c1_globals.hpp | |||
OptoBlockListSize | OpenJDK6 | intx | c2 | 8 | develop | Starting allocation size of Block_List data structures | src/share/vm/opto/c2_globals.hpp | |||
OptoBreakpointC2R | OpenJDK6 | bool | c2 | false | notproduct | insert breakpoint at runtime stub entry | src/share/vm/opto/c2_globals.hpp | |||
OptoBreakpointOSR | OpenJDK6 | bool | c2 | false | notproduct | insert breakpoint at osr method entry | src/share/vm/opto/c2_globals.hpp | |||
OptoBreakpoint | OpenJDK6 | bool | c2 | false | develop | insert breakpoint at method entry | src/share/vm/opto/c2_globals.hpp | |||
OptoBundling | OpenJDK6 | bool | c2 | product_pd | Generate nops to fill i-cache lines | src/share/vm/opto/c2_globals.hpp | ||||
OptoBundling | OpenJDK6 | bool | ppc | c2 | false | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
OptoBundling | OpenJDK6 | bool | sparc | c2 | false | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
OptoBundling | OpenJDK6 | bool | x86 | c2 | false | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
OptoCoalesce | OpenJDK6 | bool | c2 | true | develop | Use Conservative Copy Coalescing in the Register Allocator | src/share/vm/opto/c2_globals.hpp | |||
OptoLoopAlignment | OpenJDK6 | intx | runtime | product_pd | Align inner loops to zero relative to this modulus | src/share/vm/runtime/globals.hpp | ||||
OptoLoopAlignment | OpenJDK6 | intx | ppc | 16 | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
OptoLoopAlignment | OpenJDK6 | intx | sparc | 16 | define_pd_global | // = 4*wordSize | src/cpu/sparc/vm/globals_sparc.hpp | |||
OptoLoopAlignment | OpenJDK6 | intx | x86 | 16 | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
OptoLoopAlignment | OpenJDK6 | intx | zero | 16 | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
OptoNoExecute | OpenJDK6 | bool | c2 | false | notproduct | Attempt to parse and compile but do not execute generated code | src/share/vm/opto/c2_globals.hpp | |||
OptoNodeListSize | OpenJDK6 | intx | c2 | 4 | develop | Starting allocation size of Node_List data structures | src/share/vm/opto/c2_globals.hpp | |||
OptoPeepholeAt | OpenJDK6 | intx | c2 | -1 | develop | Apply peephole optimizations to this peephole rule | src/share/vm/opto/c2_globals.hpp | |||
OptoPeephole | OpenJDK6 | bool | c2 | develop_pd | Apply peephole optimizations after register allocation | src/share/vm/opto/c2_globals.hpp | ||||
OptoPeephole | OpenJDK6 | bool | ppc | c2 | false | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
OptoPeephole | OpenJDK6 | bool | sparc | c2 | false | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
OptoPeephole | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
OptoPrologueNops | OpenJDK6 | intx | c2 | 0 | develop | Insert this many extra nop instructions in the prologue of every nmethod | src/share/vm/opto/c2_globals.hpp | |||
OptoRemoveUseless | OpenJDK6 | bool | c2 | true | develop | Remove useless nodes after parsing | src/share/vm/opto/c2_globals.hpp | |||
OptoScheduling | OpenJDK6 | bool | c2 | product_pd | Instruction Scheduling after register allocation | src/share/vm/opto/c2_globals.hpp | ||||
OptoScheduling | OpenJDK6 | bool | ppc | c2 | false | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
OptoScheduling | OpenJDK6 | bool | sparc | c2 | true | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
OptoScheduling | OpenJDK6 | bool | x86 | c2 | false | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
PLABWeight | OpenJDK6 | uintx | runtime | 75 | product | Percentage (0-100) used to weigh the current sample when computing exponentially decaying average for ResizePLAB | src/share/vm/runtime/globals.hpp | |||
PSAdaptiveSizePolicyResizeVirtualSpaceAlot | OpenJDK6 | intx | runtime | -1 | develop | Resize the virtual spaces of the young or old generations | src/share/vm/runtime/globals.hpp | |||
PSAdjustTenuredGenForMinorPause | OpenJDK6 | bool | runtime | false | develop | Adjust tenured generation to achieve a minor pause goal | src/share/vm/runtime/globals.hpp | |||
PSAdjustYoungGenForMajorPause | OpenJDK6 | bool | runtime | false | develop | Adjust young generation to achieve a major pause goal | src/share/vm/runtime/globals.hpp | |||
PSChunkLargeArrays | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: true | product | Process large arrays in chunks | src/share/vm/runtime/globals.hpp | |||
ParGCArrayScanChunk | OpenJDK6 | intx | runtime | 50 | product | Scan a subset of object array and push remainder, if array is bigger than this | src/share/vm/runtime/globals.hpp | |||
ParGCCardsPerStrideChunk | OpenJDK6 | intx | runtime | 256 | diagnostic | The number of cards in each chunk of the parallel chunks used during card table scanning | src/share/vm/runtime/globals.hpp | |||
ParGCDesiredObjsFromOverflowList | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | uintx | runtime | 20 | product | The desired number of objects to claim from the overflow list | src/share/vm/runtime/globals.hpp | ||
ParGCStridesPerThread | OpenJDK6 | uintx | runtime | 2 | diagnostic | The number of strides per worker thread that we divide up the card table scanning work into | src/share/vm/runtime/globals.hpp | |||
ParGCTrimOverflow | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Eagerly trim the local overflow lists (when ParGCUseLocalOverflow) | src/share/vm/runtime/globals.hpp | ||
ParGCUseLocalOverflow | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Instead of a global overflow list, use local overflow stacks | src/share/vm/runtime/globals.hpp | ||
ParGCWorkQueueOverflowALot | OpenJDK6 | bool | runtime | false | notproduct | Simulate work queue overflow in ParNew | src/share/vm/runtime/globals.hpp | |||
ParGCWorkQueueOverflowInterval | OpenJDK6 | uintx | runtime | 1000 | notproduct | An `interval' counter that determines how frequently we simulate overflow; a smaller number increases frequency | src/share/vm/runtime/globals.hpp | |||
ParallelGCBufferWastePct | OpenJDK6 | uintx | runtime | 10 | product | Wasted fraction of parallel allocation buffer | src/share/vm/runtime/globals.hpp | |||
ParallelGCRetainPLAB | OpenJDK6 | bool | runtime | false | diagnostic | Retain parallel allocation buffers across scavenges; it is disabled because this currently conflicts with parallel card scanning under certain conditions. | src/share/vm/runtime/globals.hpp | |||
ParallelGCThreads | OpenJDK6 | uintx | runtime | 0 | product | Number of parallel threads parallel gc will use | src/share/vm/runtime/globals.hpp | |||
ParallelGCVerbose | OpenJDK6 | bool | runtime | false | product | Verbose output for parallel gc | src/share/vm/runtime/globals.hpp | |||
ParallelOldDeadWoodLimiterMean | OpenJDK6 | Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 50 | product | The mean used by the parallel compact dead wood limiter (a number between 0-100) | src/share/vm/runtime/globals.hpp | ||
ParallelOldDeadWoodLimiterStdDev | OpenJDK6 | Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 80 | product | The standard deviation used by the parallel compact dead wood limiter (a number between 0-100) | src/share/vm/runtime/globals.hpp | ||
ParallelOldGCSplitALot | OpenJDK6 | bool | runtime | false | develop | Provoke splitting (copying data from a young gen space to multiple destination spaces) | src/share/vm/runtime/globals.hpp | |||
ParallelOldGCSplitInterval | OpenJDK6 | uintx | runtime | 3 | develop | How often to provoke splitting a young gen space | src/share/vm/runtime/globals.hpp | |||
ParallelRefProcBalancingEnabled | OpenJDK6 | bool | runtime | true | product | Enable balancing of reference processing queues | src/share/vm/runtime/globals.hpp | |||
ParallelRefProcEnabled | OpenJDK6 | bool | runtime | false | product | Enable parallel reference processing whenever possible | src/share/vm/runtime/globals.hpp | |||
PartialPeelAtUnsignedTests | OpenJDK6 | bool | c2 | true | product | Partial peel at unsigned tests if no signed test exists | src/share/vm/opto/c2_globals.hpp | |||
PartialPeelLoop | OpenJDK6 | bool | c2 | true | product | Partial peel (rotate) loops | src/share/vm/opto/c2_globals.hpp | |||
PartialPeelNewPhiDelta | OpenJDK6 | intx | c2 | 0 | product | Additional phis that can be created by partial peeling | src/share/vm/opto/c2_globals.hpp | |||
PatchALot | OpenJDK6 | bool | c1 | false | develop | Marks all fields as having unloaded classes | src/share/vm/c1/c1_globals.hpp | |||
PauseAtExit | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Pause and wait for keypress on exit if a debugger is attached | src/share/vm/runtime/globals.hpp | |||
PauseAtStartupFile | OpenJDK6 | ccstr | runtime | EMBEDDED_ONLY: NULL | diagnostic | The file to create and for whose removal to await when pausing at startup. (default: ./vm.paused. | src/share/vm/runtime/globals.hpp | |||
PauseAtStartup | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Causes the VM to pause at startup time and wait for the pause file to be removed (default: ./vm.paused. | src/share/vm/runtime/globals.hpp | |||
PausePadding | OpenJDK6 | uintx | runtime | 1 | product | How much buffer to keep for pause time | src/share/vm/runtime/globals.hpp | |||
PerBytecodeRecompilationCutoff | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 200 | product | Per-BCI limit on repeated recompilation (-1=>'Inf') | src/share/vm/runtime/globals.hpp | |||
PerBytecodeTrapLimit | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 4 | product | Limit on traps (of one kind) at a particular BCI | src/share/vm/runtime/globals.hpp | |||
PerMethodRecompilationCutoff | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 400 | product | After recompiling N times, stay in the interpreter (-1=>'Inf') | src/share/vm/runtime/globals.hpp | |||
PerMethodSpecTrapLimit | OpenJDK8 | intx | runtime | EMBEDDED_ONLY: 5000 | experimental | Limit on speculative traps (of one kind) in a method (includes inlines) | src/share/vm/runtime/globals.hpp | |||
PerMethodTrapLimit | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 100 | product | Limit on traps (of one kind) in a method (includes inlines) | src/share/vm/runtime/globals.hpp | |||
PerfAllowAtExitRegistration | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Allow registration of atexit() methods | src/share/vm/runtime/globals.hpp | |||
PerfBypassFileSystemCheck | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Bypass Win32 file system criteria checks (Windows Only) | src/share/vm/runtime/globals.hpp | |||
PerfDataMemorySize | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 32*K | product | Size of performance data memory region. Will be rounded up to a multiple of the native os page size. | src/share/vm/runtime/globals.hpp | |||
PerfDataSamplingInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 50 | product | Data sampling interval (in milliseconds) | src/share/vm/runtime/globals.hpp | |||
PerfDataSaveFile | OpenJDK6 | ccstr | runtime | EMBEDDED_ONLY: NULL | product | Save PerfData memory to the specified absolute pathname. The string %p in the file name (if present) will be replaced by pid | src/share/vm/runtime/globals.hpp | |||
PerfDataSaveToFile | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Save PerfData memory to hsperfdata_ | src/share/vm/runtime/globals.hpp | |||
PerfDisableSharedMem | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Store performance data in standard memory | src/share/vm/runtime/globals.hpp | |||
PerfMaxStringConstLength | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1024 | product | Maximum PerfStringConstant string length before truncation | src/share/vm/runtime/globals.hpp | |||
PerfTraceDataCreation | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | develop | Trace creation of Performance Data Entries | src/share/vm/runtime/globals.hpp | |||
PerfTraceMemOps | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | develop | Trace PerfMemory create/attach/detach calls | src/share/vm/runtime/globals.hpp | |||
PinAllInstructions | OpenJDK6 | bool | c1 | false | develop | All instructions are pinned | src/share/vm/c1/c1_globals.hpp | |||
PoisonOSREntry | OpenJDK6 | bool | c2 | true | develop | Detect abnormal calls to OSR code | src/share/vm/opto/c2_globals.hpp | |||
PowerArchitecturePPC64 | OpenJDK7 | uintx | ppc | 0 | product | CPU Version: x for PowerX. Currently recognizes Power5 to Power7. Default is 0. CPUs newer than Power7 will be recognized as Power7. | src/cpu/ppc/vm/globals_ppc.hpp | |||
PreInflateSpin | OpenJDK6 | intx | runtime | product_pd | Number of times to spin wait before inflation | src/share/vm/runtime/globals.hpp | ||||
PreInflateSpin | OpenJDK6 | intx | ppc | 10 | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
PreInflateSpin | OpenJDK6 | intx | sparc | 40 | define_pd_global | // Determined by running design center | src/cpu/sparc/vm/globals_sparc.hpp | |||
PreInflateSpin | OpenJDK6 | intx | x86 | 10 | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
PreInflateSpin | OpenJDK6 | intx | zero | 10 | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
PreallocatedOutOfMemoryErrorCount | OpenJDK6 | uintx | runtime | 4 | develop | Number of OutOfMemoryErrors preallocated with backtrace | src/share/vm/runtime/globals.hpp | |||
PredictedLoadedClassCount | OpenJDK6 | intx | runtime | 0 | experimental | Experimental: Tune loaded class cache starting size | src/share/vm/runtime/globals.hpp | |||
PreferInterpreterNativeStubs | OpenJDK6 | bool | runtime | product_pd | Use always interpreter stubs for native methods invoked via interpreter | src/share/vm/runtime/globals.hpp | ||||
PreferInterpreterNativeStubs | OpenJDK6 | bool | ppc | c2 | false | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
PreferInterpreterNativeStubs | OpenJDK6 | bool | sparc | c1 | false | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
PreferInterpreterNativeStubs | OpenJDK6 | bool | sparc | c2 | false | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
PreferInterpreterNativeStubs | OpenJDK6 | bool | x86 | c1 | false | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
PreferInterpreterNativeStubs | OpenJDK6 | bool | x86 | c2 | false | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
PreferInterpreterNativeStubs | OpenJDK6 | bool | zero | shark | false | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
PrefetchCopyIntervalInBytes | OpenJDK6 | intx | runtime | -1 | product | How far ahead to prefetch destination area (<= 0 means off) | src/share/vm/runtime/globals.hpp | |||
PrefetchFieldsAhead | OpenJDK6 | Obsoleted in JDK19 Expired in JDK20 | intx | runtime | -1 | product | How many fields ahead to prefetch in oop scan (<= 0 means off) | src/share/vm/runtime/globals.hpp | ||
PrefetchScanIntervalInBytes | OpenJDK6 | intx | runtime | -1 | product | How far ahead to prefetch scan area (<= 0 means off) | src/share/vm/runtime/globals.hpp | |||
PreserveAllAnnotations | OpenJDK6 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | runtime | false | product | Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations | src/share/vm/runtime/globals.hpp | ||
PreserveFramePointer | OpenJDK8 | bool | runtime | product_pd | Use the FP register for holding the frame pointer and not as a general purpose register. | src/share/vm/runtime/globals.hpp | ||||
PreserveFramePointer | OpenJDK8 | bool | ppc | false | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
PreserveFramePointer | OpenJDK8 | bool | sparc | false | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
PreserveFramePointer | OpenJDK8 | bool | x86 | false | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
PreserveFramePointer | OpenJDK8 | bool | zero | false | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
PretenureSizeThreshold | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 0 | product | Maximum size in bytes of objects allocated in DefNew generation; zero means no maximum | src/share/vm/runtime/globals.hpp | |||
PrintActiveCpus | OpenJDK8 | bool | linux | false | diagnostic | Print the number of CPUs detected in os::active_processor_count | src/os/linux/vm/globals_linux.hpp | |||
PrintAdapterHandlers | OpenJDK6 | bool | runtime | false | diagnostic | Print code generated for i2c/c2i adapters | src/share/vm/runtime/globals.hpp | |||
PrintAdaptiveSizePolicy | OpenJDK6 | bool | runtime | false | product | Print information about AdaptiveSizePolicy | src/share/vm/runtime/globals.hpp | |||
PrintAssemblyOptions | OpenJDK6 | ccstr | runtime | NULL | diagnostic | Print options string passed to disassembler.so | src/share/vm/runtime/globals.hpp | |||
PrintAssembly | OpenJDK6 | bool | runtime | false | diagnostic | Print assembly code (using external disassembler.so) | src/share/vm/runtime/globals.hpp | |||
PrintBailouts | OpenJDK6 | bool | c1 | false | develop | Print bailout and its reason | src/share/vm/c1/c1_globals.hpp | |||
PrintBiasedLockingStatistics | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK18 Expired in JDK19 | bool | runtime | false | diagnostic | Print statistics of biased locking in JVM | src/share/vm/runtime/globals.hpp | ||
PrintBlockElimination | OpenJDK6 | bool | c1 | false | develop | Print basic block elimination | src/share/vm/c1/c1_globals.hpp | |||
PrintBytecodeHistogram | OpenJDK6 | bool | runtime | false | develop | Print histogram of the executed bytecodes | src/share/vm/runtime/globals.hpp | |||
PrintBytecodePairHistogram | OpenJDK6 | bool | runtime | false | develop | Print histogram of the executed bytecode pairs | src/share/vm/runtime/globals.hpp | |||
PrintC1Statistics | OpenJDK6 | bool | c1 | false | notproduct | Print Compiler1 statistics | src/share/vm/c1/c1_globals.hpp | |||
PrintCEE | OpenJDK6 | bool | c1 | false | develop | Print Conditional Expression Elimination | src/share/vm/c1/c1_globals.hpp | |||
PrintCFG0 | OpenJDK6 | bool | c1 | false | notproduct | Print control flow graph after construction | src/share/vm/c1/c1_globals.hpp | |||
PrintCFG1 | OpenJDK6 | bool | c1 | false | notproduct | Print control flow graph after optimizations | src/share/vm/c1/c1_globals.hpp | |||
PrintCFG2 | OpenJDK6 | bool | c1 | false | notproduct | Print control flow graph before code generation | src/share/vm/c1/c1_globals.hpp | |||
PrintCFGBlockFreq | OpenJDK6 | bool | c2 | false | develop | Print CFG block freqencies | src/share/vm/opto/c2_globals.hpp | |||
PrintCFGToFile | OpenJDK6 | bool | c1 | false | develop | print control flow graph to a separate file during compilation | src/share/vm/c1/c1_globals.hpp | |||
PrintCFG | OpenJDK6 | bool | c1 | false | notproduct | Print control flow graph after each change | src/share/vm/c1/c1_globals.hpp | |||
PrintCMSInitiationStatistics | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Statistics for initiating a CMS collection | src/share/vm/runtime/globals.hpp | |||
PrintCMSStatistics | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | product | Statistics for CMS | src/share/vm/runtime/globals.hpp | |||
PrintCanonicalization | OpenJDK6 | bool | c1 | false | develop | Print graph node canonicalization | src/share/vm/c1/c1_globals.hpp | |||
PrintClassHistogramAfterFullGC | OpenJDK6 | bool | runtime | false | manageable | Print a class histogram after any major stop-world GC | src/share/vm/runtime/globals.hpp | |||
PrintClassHistogramBeforeFullGC | OpenJDK6 | bool | runtime | false | manageable | Print a class histogram before any major stop-world GC | src/share/vm/runtime/globals.hpp | |||
PrintClassHistogram | OpenJDK6 | bool | runtime | false | manageable | Print a histogram of class instances | src/share/vm/runtime/globals.hpp | |||
PrintClassStatistics | OpenJDK6 | bool | runtime | false | notproduct | Print class statistics at end of run | src/share/vm/runtime/globals.hpp | |||
PrintCodeCache2 | OpenJDK6 | bool | runtime | false | develop | Print detailed usage information on the code cache when exiting | src/share/vm/runtime/globals.hpp | |||
PrintCodeCacheExtension | OpenJDK6 | bool | runtime | false | develop | Print extension of code cache | src/share/vm/runtime/globals.hpp | |||
PrintCodeCacheOnCompilation | OpenJDK8 | bool | runtime | false | product | Print the code cache memory usage each time a method is compiled | src/share/vm/runtime/globals.hpp | |||
PrintCodeCache | OpenJDK6 | bool | runtime | false | product | Print the code cache memory usage when exiting | src/share/vm/runtime/globals.hpp | |||
PrintCommandLineFlags | OpenJDK6 | bool | runtime | false | product | Print flags specified on command line or set by ergonomics | src/share/vm/runtime/globals.hpp | |||
PrintCompilation2 | OpenJDK6 | bool | runtime | false | diagnostic | Print additional statistics per compilation | src/share/vm/runtime/globals.hpp | |||
PrintCompilation | OpenJDK6 | bool | runtime | false | product | Print compilations | src/share/vm/runtime/globals.hpp | |||
PrintCompressedOopsMode | OpenJDK6 | bool | runtime | false | diagnostic | Print compressed oops base address and encoding mode | src/share/vm/runtime/globals.hpp | |||
PrintConcurrentLocks | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | manageable | Print java.util.concurrent locks in thread dump | src/share/vm/runtime/globals.hpp | |||
PrintDTraceDOF | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Print the DTrace DOF passed to the system for JSDT probes | src/share/vm/runtime/globals.hpp | |||
PrintDebugInfo | OpenJDK6 | bool | runtime | false | develop | Print debug information for all nmethods when generated | src/share/vm/runtime/globals.hpp | |||
PrintDependencies | OpenJDK6 | bool | runtime | false | develop | Print dependency information for all nmethods when generated | src/share/vm/runtime/globals.hpp | |||
PrintDominators | OpenJDK6 | bool | c2 | false | develop | Print out dominator trees for GVN | src/share/vm/opto/c2_globals.hpp | |||
PrintEliminateAllocations | OpenJDK6 | bool | c2 | false | notproduct | Print out when allocations are eliminated | src/share/vm/opto/c2_globals.hpp | |||
PrintEliminateLocks | OpenJDK6 | bool | c2 | false | notproduct | Print out when locks are eliminated | src/share/vm/opto/c2_globals.hpp | |||
PrintEscapeAnalysis | OpenJDK6 | bool | c2 | false | notproduct | Print the results of escape analysis | src/share/vm/opto/c2_globals.hpp | |||
PrintExceptionHandlers | OpenJDK6 | bool | runtime | false | develop | Print exception handler tables for all nmethods when generated | src/share/vm/runtime/globals.hpp | |||
PrintFLSCensus | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | product | Census for CMS' FreeListSpace | src/share/vm/runtime/globals.hpp | |||
PrintFLSStatistics | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | product | Statistics for CMS' FreeListSpace | src/share/vm/runtime/globals.hpp | |||
PrintFieldLayout | OpenJDK8 | bool | runtime | false | notproduct | Print field layout for each class | src/share/vm/runtime/globals.hpp | |||
PrintFlagsFinal | OpenJDK6 | bool | runtime | false | product | Print all VM flags after argument and ergonomic processing | src/share/vm/runtime/globals.hpp | |||
PrintFlagsInitial | OpenJDK6 | bool | runtime | false | product | Print all VM flags before argument processing and exit VM | src/share/vm/runtime/globals.hpp | |||
PrintFlagsWithComments | OpenJDK6 | bool | runtime | false | notproduct | Print all VM flags with default values and descriptions and exit | src/share/vm/runtime/globals.hpp | |||
PrintFrameConverterAssembly | OpenJDK6 | bool | c2 | false | notproduct | Print New compiler assembly output for frame converters | src/share/vm/opto/c2_globals.hpp | |||
PrintGCApplicationConcurrentTime | OpenJDK6 | bool | runtime | false | product | Print the time the application has been running | src/share/vm/runtime/globals.hpp | |||
PrintGCApplicationStoppedTime | OpenJDK6 | bool | runtime | false | product | Print the time the application has been stopped | src/share/vm/runtime/globals.hpp | |||
PrintGCCause | OpenJDK7 | bool | runtime | EMBEDDED_ONLY: true | product | Include GC cause in GC logging | src/share/vm/runtime/globals.hpp | |||
PrintGCDateStamps | OpenJDK6 | bool | runtime | false | manageable | Print date stamps at garbage collection | src/share/vm/runtime/globals.hpp | |||
PrintGCDetails | OpenJDK6 | bool | runtime | false | manageable | Print more details at garbage collection | src/share/vm/runtime/globals.hpp | |||
PrintGCID | OpenJDK8 | bool | runtime | false | manageable | Print an identifier for each garbage collection | src/share/vm/runtime/globals.hpp | |||
PrintGCTaskTimeStamps | OpenJDK6 | bool | runtime | false | product | Print timestamps for individual gc worker thread tasks | src/share/vm/runtime/globals.hpp | |||
PrintGCTimeStamps | OpenJDK6 | bool | runtime | false | manageable | Print timestamps at garbage collection | src/share/vm/runtime/globals.hpp | |||
PrintGC | OpenJDK6 | bool | runtime | false | manageable | Print message at garbage collection | src/share/vm/runtime/globals.hpp | |||
PrintHeapAtGCExtended | OpenJDK6 | bool | runtime | false | product_rw | Print extended information about the layout of the heap when -XX:+PrintHeapAtGC is set | src/share/vm/runtime/globals.hpp | |||
PrintHeapAtGC | OpenJDK6 | bool | runtime | false | product_rw | Print heap layout before and after each GC | src/share/vm/runtime/globals.hpp | |||
PrintHeapAtSIGBREAK | OpenJDK6 | bool | runtime | true | product | Print heap layout in response to SIGBREAK | src/share/vm/runtime/globals.hpp | |||
PrintIR0 | OpenJDK6 | bool | c1 | false | notproduct | Print full intermediate representation after construction | src/share/vm/c1/c1_globals.hpp | |||
PrintIR1 | OpenJDK6 | bool | c1 | false | notproduct | Print full intermediate representation after optimizations | src/share/vm/c1/c1_globals.hpp | |||
PrintIR2 | OpenJDK6 | bool | c1 | false | notproduct | Print full intermediate representation before code generation | src/share/vm/c1/c1_globals.hpp | |||
PrintIRDuringConstruction | OpenJDK6 | bool | c1 | false | notproduct | Print IR as it's being constructed (helpful for debugging frontend) | src/share/vm/c1/c1_globals.hpp | |||
PrintIRWithLIR | OpenJDK6 | bool | c1 | false | notproduct | Print IR instructions with generated LIR | src/share/vm/c1/c1_globals.hpp | |||
PrintIR | OpenJDK6 | bool | c1 | false | notproduct | Print full intermediate representation after each change | src/share/vm/c1/c1_globals.hpp | |||
PrintIdealGraphAddress | OpenJDK6 | ccstr | c2 | 127.0.0.1 | notproduct | IP address to connect to visualizer | src/share/vm/opto/c2_globals.hpp | |||
PrintIdealGraphFile | OpenJDK6 | ccstr | c2 | NULL | notproduct | File to dump ideal graph to. If set overrides the use of the network | src/share/vm/opto/c2_globals.hpp | |||
PrintIdealGraphLevel | OpenJDK6 | intx | c2 | 0 | develop | Print ideal graph to XML file / network interface. By default attempts to connect to the visualizer on a socket. | src/share/vm/opto/c2_globals.hpp | |||
PrintIdealGraphPort | OpenJDK6 | intx | c2 | 4444 | develop | Ideal graph printer to network port | src/share/vm/opto/c2_globals.hpp | |||
PrintIdealNodeCount | OpenJDK7 | bool | c2 | false | notproduct | Print liveness counts of ideal nodes | src/share/vm/opto/c2_globals.hpp | |||
PrintIdeal | OpenJDK6 | bool | c2 | false | notproduct | Print ideal graph before code generation | src/share/vm/opto/c2_globals.hpp | |||
PrintInitialBlockList | OpenJDK6 | bool | c1 | false | notproduct | Print block list of BlockListBuilder | src/share/vm/c1/c1_globals.hpp | |||
PrintInlining | OpenJDK6 | bool | runtime | false | diagnostic | Print inlining optimizations | src/share/vm/runtime/globals.hpp | |||
PrintInterpreter | OpenJDK6 | bool | runtime | false | diagnostic | Print the generated interpreter code | src/share/vm/runtime/globals.hpp | |||
PrintIntrinsics | OpenJDK6 | bool | c2 | false | diagnostic | prints attempted and successful inlining of intrinsics | src/share/vm/opto/c2_globals.hpp | |||
PrintJNIGCStalls | OpenJDK6 | bool | runtime | false | product | Print diagnostic message when GC is stalled by JNI critical section | src/share/vm/runtime/globals.hpp | |||
PrintJNIResolving | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Used to implement -v:jni | src/share/vm/runtime/globals.hpp | ||
PrintJVMWarnings | OpenJDK6 | bool | runtime | false | develop | Print warnings for unimplemented JVM functions | src/share/vm/runtime/globals.hpp | |||
PrintLIRWithAssembly | OpenJDK6 | bool | c1 | false | notproduct | Show LIR instruction with generated assembly | src/share/vm/c1/c1_globals.hpp | |||
PrintLIR | OpenJDK6 | bool | c1 | false | develop | print low-level IR | src/share/vm/c1/c1_globals.hpp | |||
PrintLockStatistics | OpenJDK6 | bool | c2 | false | notproduct | Print precise statistics on the dynamic lock usage | src/share/vm/opto/c2_globals.hpp | |||
PrintMallocFree | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | bool | runtime | false | notproduct | Trace calls to C heap malloc/free allocation | src/share/vm/runtime/globals.hpp | ||
PrintMallocStatistics | OpenJDK6 | bool | runtime | false | develop | Print malloc/free statistics | src/share/vm/runtime/globals.hpp | |||
PrintMalloc | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | bool | runtime | false | develop | Print all malloc/free calls | src/share/vm/runtime/globals.hpp | ||
PrintMethodData | OpenJDK6 | bool | runtime | false | develop | Print the results of +ProfileInterpreter at end of run | src/share/vm/runtime/globals.hpp | |||
PrintMethodFlushingStatistics | OpenJDK8 | bool | runtime | false | diagnostic | print statistics about method flushing | src/share/vm/runtime/globals.hpp | |||
PrintMethodFlushing | OpenJDK6 | bool | runtime | false | develop | Print the nmethods being flushed | src/share/vm/runtime/globals.hpp | |||
PrintMethodHandleStubs | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Print generated stub code for method handles | src/share/vm/runtime/globals.hpp | |||
PrintMethodStatistics | OpenJDK6 | bool | runtime | false | notproduct | Print method statistics at end of run | src/share/vm/runtime/globals.hpp | |||
PrintMiscellaneous | OpenJDK6 | bool | runtime | false | develop | Print uncategorized debugging information (requires +Verbose) | src/share/vm/runtime/globals.hpp | |||
PrintNMTStatistics | OpenJDK7 | bool | runtime | false | diagnostic | Print native memory tracking summary data if it is on | src/share/vm/runtime/globals.hpp | |||
PrintNMethods | OpenJDK6 | bool | runtime | false | diagnostic | Print assembly code for nmethods when generated | src/share/vm/runtime/globals.hpp | |||
PrintNativeNMethods | OpenJDK6 | bool | runtime | false | diagnostic | Print assembly code for native nmethods when generated | src/share/vm/runtime/globals.hpp | |||
PrintNotLoaded | OpenJDK6 | bool | c1 | false | develop | Prints where classes are not loaded during code generation | src/share/vm/c1/c1_globals.hpp | |||
PrintNullCheckElimination | OpenJDK6 | bool | c1 | false | develop | Print null check elimination | src/share/vm/c1/c1_globals.hpp | |||
PrintOldPLAB | OpenJDK6 | bool | runtime | false | product | Print (old gen) promotion LAB's sizing decisions | src/share/vm/runtime/globals.hpp | |||
PrintOopAddress | OpenJDK6 | bool | runtime | false | product | Always print the location of the oop | src/share/vm/runtime/globals.hpp | |||
PrintOptimizePtrCompare | OpenJDK6 | bool | c2 | false | notproduct | Print information about optimized pointers compare | src/share/vm/opto/c2_globals.hpp | |||
PrintOptimizeStringConcat | OpenJDK6 | bool | c2 | false | notproduct | Print information about transformations performed on Strings | src/share/vm/opto/c2_globals.hpp | |||
PrintOptoAssembly | OpenJDK6 | bool | c2 | false | notproduct | Print New compiler assembly output | src/share/vm/opto/c2_globals.hpp | |||
PrintOptoInlining | OpenJDK6 | bool | c2 | false | notproduct | Print compiler2 inlining decisions | src/share/vm/opto/c2_globals.hpp | |||
PrintOptoPeephole | OpenJDK6 | bool | c2 | false | notproduct | Print New compiler peephole replacements | src/share/vm/opto/c2_globals.hpp | |||
PrintOptoStatistics | OpenJDK6 | bool | c2 | false | notproduct | Print New compiler statistics | src/share/vm/opto/c2_globals.hpp | |||
PrintOpto | OpenJDK6 | bool | c2 | false | notproduct | Print compiler2 attempts | src/share/vm/opto/c2_globals.hpp | |||
PrintPLAB | OpenJDK6 | bool | runtime | false | product | Print (survivor space) promotion LAB's sizing decisions | src/share/vm/runtime/globals.hpp | |||
PrintParallelOldGCPhaseTimes | OpenJDK6 | bool | runtime | false | product | Print the time taken by each phase in ParallelOldGC (PrintGCDetails must also be enabled) | src/share/vm/runtime/globals.hpp | |||
PrintParseStatistics | OpenJDK6 | bool | c2 | false | notproduct | Print nodes, transforms and new values made per bytecode parsed | src/share/vm/opto/c2_globals.hpp | |||
PrintPhiFunctions | OpenJDK6 | bool | c1 | false | notproduct | Print phi functions when they are created and simplified | src/share/vm/c1/c1_globals.hpp | |||
PrintPreciseBiasedLockingStatistics | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK18 Expired in JDK19 | bool | c2 | false | diagnostic | Print per-lock-site statistics of biased locking in JVM | src/share/vm/opto/c2_globals.hpp | ||
PrintPreciseRTMLockingStatistics | OpenJDK8 | bool | c2 | false | diagnostic | Print per-lock-site statistics of rtm locking in JVM | src/share/vm/opto/c2_globals.hpp | |||
PrintPromotionFailure | OpenJDK6 | bool | runtime | false | product | Print additional diagnostic information following promotion failure | src/share/vm/runtime/globals.hpp | |||
PrintReferenceGC | OpenJDK6 | bool | runtime | false | product | Print times spent handling reference objects during GC (enabled only when PrintGCDetails) | src/share/vm/runtime/globals.hpp | |||
PrintRelocations | OpenJDK6 | bool | runtime | false | develop | Print relocation information for all nmethods when generated | src/share/vm/runtime/globals.hpp | |||
PrintRewrites | OpenJDK6 | bool | runtime | false | notproduct | Print methods that are being rewritten | src/share/vm/runtime/globals.hpp | |||
PrintSafepointStatisticsCount | OpenJDK6 | Deprecated in JDK11 Obsoleted in JDK12 Expired in JDK13 | intx | runtime | 300 | product | Total number of safepoint statistics collected before printing them out | src/share/vm/runtime/globals.hpp | ||
PrintSafepointStatisticsTimeout | OpenJDK6 | Deprecated in JDK11 Obsoleted in JDK12 Expired in JDK13 | intx | runtime | -1 | product | Print safepoint statistics only when safepoint takes more than PrintSafepointSatisticsTimeout in millis | src/share/vm/runtime/globals.hpp | ||
PrintSafepointStatistics | OpenJDK6 | Deprecated in JDK11 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | false | product | Print statistics about safepoint synchronization | src/share/vm/runtime/globals.hpp | ||
PrintSharedArchiveAndExit | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | product | Print shared archive file contents | src/share/vm/runtime/globals.hpp | |||
PrintSharedDictionary | OpenJDK8 | Obsoleted in JDK20 Expired in JDK21 | bool | runtime | EMBEDDED_ONLY: false | product | If PrintSharedArchiveAndExit is true, also print the shared dictionary | src/share/vm/runtime/globals.hpp | ||
PrintSharedSpaces | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | EMBEDDED_ONLY: false | product | Print usage of shared spaces | src/share/vm/runtime/globals.hpp | ||
PrintSignatureHandlers | OpenJDK6 | bool | runtime | false | diagnostic | Print code generated for native method signature handlers | src/share/vm/runtime/globals.hpp | |||
PrintSimpleStubs | OpenJDK6 | bool | c1 | false | notproduct | Print SimpleStubs | src/share/vm/c1/c1_globals.hpp | |||
PrintStringDeduplicationStatistics | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | product | Print string deduplication statistics | src/share/vm/runtime/globals.hpp | |||
PrintStringTableStatistics | OpenJDK6 | bool | runtime | false | product | print statistics about the StringTable and SymbolTable | src/share/vm/runtime/globals.hpp | |||
PrintStubCode | OpenJDK6 | bool | runtime | false | diagnostic | Print generated stub code | src/share/vm/runtime/globals.hpp | |||
PrintSymbolTableSizeHistogram | OpenJDK6 | bool | runtime | false | notproduct | print histogram of the symbol table | src/share/vm/runtime/globals.hpp | |||
PrintSystemDictionaryAtExit | OpenJDK6 | bool | runtime | false | notproduct | Print the system dictionary at exit | src/share/vm/runtime/globals.hpp | |||
PrintTLAB | OpenJDK6 | bool | runtime | false | product | Print various TLAB related information | src/share/vm/runtime/globals.hpp | |||
PrintTenuringDistribution | OpenJDK6 | bool | runtime | false | product | Print tenuring age information | src/share/vm/runtime/globals.hpp | |||
PrintTieredEvents | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Print tiered events notifications | src/share/vm/runtime/globals.hpp | |||
PrintUnsafeOptimization | OpenJDK6 | bool | c1 | false | develop | Print optimization of raw unsafe ops | src/share/vm/c1/c1_globals.hpp | |||
PrintVMMessages | OpenJDK6 | bool | runtime | true | develop | Print VM messages on console | src/share/vm/runtime/globals.hpp | |||
PrintVMOptions | OpenJDK6 | bool | runtime | false | product | Print flags that appeared on the command line | src/share/vm/runtime/globals.hpp | |||
PrintVMQWaitTime | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Print out the waiting time in VM operation queue | src/share/vm/runtime/globals.hpp | ||
PrintValueNumbering | OpenJDK6 | bool | c1 | false | develop | Print Value Numbering | src/share/vm/c1/c1_globals.hpp | |||
PrintVtableStats | OpenJDK6 | bool | runtime | false | notproduct | print vtables stats at end of run | src/share/vm/runtime/globals.hpp | |||
PrintVtables | OpenJDK6 | bool | runtime | false | develop | print vtables when printing klass | src/share/vm/runtime/globals.hpp | |||
PrintWarnings | OpenJDK6 | bool | runtime | true | product | Print JVM warnings to output stream | src/share/vm/runtime/globals.hpp | |||
ProcessDistributionStride | OpenJDK6 | Obsoleted in JDK23 Expired in JDK24 | uintx | runtime | 4 | product | Stride through processors when distributing processes | src/share/vm/runtime/globals.hpp | ||
ProfileDynamicTypes | OpenJDK6 | bool | c2 | true | diagnostic | do extra type profiling and use it more aggressively | src/share/vm/opto/c2_globals.hpp | |||
ProfileInterpreter | OpenJDK6 | bool | runtime | product_pd | Profile at the bytecode level during interpretation | src/share/vm/runtime/globals.hpp | ||||
ProfileInterpreter | OpenJDK6 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
ProfileInterpreter | OpenJDK6 | bool | sparc | c1 | false | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
ProfileInterpreter | OpenJDK6 | bool | sparc | c2 | true | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
ProfileInterpreter | OpenJDK6 | bool | x86 | c1 | false | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
ProfileInterpreter | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
ProfileInterpreter | OpenJDK6 | bool | zero | shark | false | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
ProfileIntervalsTicks | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | intx | runtime | EMBEDDED_ONLY: 100 | product | Number of ticks between printing of interval profile (+ProfileIntervals) | src/share/vm/runtime/globals.hpp | ||
ProfileIntervals | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | runtime | false | product | Print profiles for each interval (see ProfileIntervalsTicks) | src/share/vm/runtime/globals.hpp | ||
ProfileMaturityPercentage | OpenJDK6 | intx | runtime | 20 | product | number of method invocations/branches (expressed as % of CompileThreshold) before using the method's profile | src/share/vm/runtime/globals.hpp | |||
ProfileTraps | OpenJDK6 | bool | runtime | develop_pd | Profile deoptimization traps at the bytecode level | src/share/vm/runtime/globals.hpp | ||||
ProfileTraps | OpenJDK6 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
ProfileTraps | OpenJDK6 | bool | sparc | c1 | false | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
ProfileTraps | OpenJDK6 | bool | sparc | c2 | true | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
ProfileTraps | OpenJDK6 | bool | x86 | c1 | false | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
ProfileTraps | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
ProfileTraps | OpenJDK6 | bool | zero | shark | false | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
ProfileVM | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | runtime | false | product | Profile ticks that fall within VM (either in the VM Thread or VM code called through stubs) | src/share/vm/runtime/globals.hpp | ||
ProfilerCheckIntervals | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | runtime | false | notproduct | Collect and print information on spacing of profiler ticks | src/share/vm/runtime/globals.hpp | ||
ProfilerNodeSize | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1024 | develop | Size in K to allocate for the Profile Nodes of each thread | src/share/vm/runtime/globals.hpp | |||
ProfilerNumberOfCompiledMethods | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | intx | runtime | EMBEDDED_ONLY: 25 | develop | Number of compiled methods to show in profile | src/share/vm/runtime/globals.hpp | ||
ProfilerNumberOfInterpretedMethods | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | intx | runtime | EMBEDDED_ONLY: 25 | develop | Number of interpreted methods to show in profile | src/share/vm/runtime/globals.hpp | ||
ProfilerNumberOfRuntimeStubNodes | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | intx | runtime | EMBEDDED_ONLY: 25 | develop | Number of runtime stub nodes to show in profile | src/share/vm/runtime/globals.hpp | ||
ProfilerNumberOfStubMethods | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | intx | runtime | EMBEDDED_ONLY: 25 | develop | Number of stub methods to show in profile | src/share/vm/runtime/globals.hpp | ||
ProfilerPCTickThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 15 | develop | Number of ticks in a PC buckets to be a hotspot | src/share/vm/runtime/globals.hpp | |||
ProfilerPrintByteCodeStatistics | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | runtime | false | product | Print bytecode statistics when dumping profiler output | src/share/vm/runtime/globals.hpp | ||
ProfilerRecordPC | OpenJDK6 | Obsoleted in JDK13 Expired in JDK14 | bool | runtime | false | product | Collect ticks for each 16 byte interval of compiled code | src/share/vm/runtime/globals.hpp | ||
PromotedPadding | OpenJDK6 | uintx | runtime | 3 | product | How much buffer to keep for promotion failure | src/share/vm/runtime/globals.hpp | |||
PromotionFailureALotCount | OpenJDK6 | uintx | runtime | 1000 | develop | Number of promotion failures occurring at ParGCAllocBuffer refill attempts (ParNew) or promotion attempts (other young collectors) | src/share/vm/runtime/globals.hpp | |||
PromotionFailureALotInterval | OpenJDK6 | uintx | runtime | 5 | develop | Total collections between promotion failures alot | src/share/vm/runtime/globals.hpp | |||
PromotionFailureALot | OpenJDK6 | bool | runtime | false | notproduct | Use promotion failure handling on every youngest generation collection | src/share/vm/runtime/globals.hpp | |||
ProtectionDomainVerification | OpenJDK6 | bool | runtime | true | develop | Verify protection domain before resolution in system dictionary | src/share/vm/runtime/globals.hpp | |||
QueuedAllocationWarningCount | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 0 | product | Number of times an allocation that queues behind a GC will retry before printing a warning | src/share/vm/runtime/globals.hpp | |||
RTMAbortRatio | OpenJDK8 | intx | x86 | 50 | experimental | Lock abort ratio at which to stop use RTM lock eliding | src/cpu/x86/vm/globals_x86.hpp | |||
RTMAbortThreshold | OpenJDK8 | intx | x86 | 1000 | experimental | Calculate abort ratio after this number of aborts | src/cpu/x86/vm/globals_x86.hpp | |||
RTMLockingCalculationDelay | OpenJDK8 | intx | x86 | 0 | experimental | Number of milliseconds to wait before start calculating aborts for RTM locking | src/cpu/x86/vm/globals_x86.hpp | |||
RTMLockingThreshold | OpenJDK8 | intx | x86 | 10000 | experimental | Lock count at which to do RTM lock eliding without abort ratio calculation | src/cpu/x86/vm/globals_x86.hpp | |||
RTMRetryCount | OpenJDK8 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | uintx | x86 | 5 | product | Number of RTM retries on lock abort or busy | src/cpu/x86/vm/globals_x86.hpp | ||
RTMSpinLoopCount | OpenJDK8 | intx | x86 | 100 | experimental | Spin count for lock to become free before RTM retry | src/cpu/x86/vm/globals_x86.hpp | |||
RTMTotalCountIncrRate | OpenJDK8 | intx | x86 | 64 | experimental | Increment total RTM attempted lock count once every n times | src/cpu/x86/vm/globals_x86.hpp | |||
RangeCheckElimination | OpenJDK6 | bool | runtime | true | product | Eliminate range checks | src/share/vm/runtime/globals.hpp | |||
RangeLimitCheck | OpenJDK6 | bool | c2 | true | diagnostic | Additional overflow checks during range check elimination | src/share/vm/opto/c2_globals.hpp | |||
ReadPrefetchInstr | OpenJDK6 | intx | x86 | 0 | product | Prefetch instruction to prefetch ahead | src/cpu/x86/vm/globals_x86.hpp | |||
ReassociateInvariants | OpenJDK6 | bool | c2 | true | product | Enable reassociation of expressions with loop invariants. | src/share/vm/opto/c2_globals.hpp | |||
ReduceBulkZeroing | OpenJDK6 | bool | c2 | true | product | When bulk-initializing, try to avoid needless zeroing | src/share/vm/opto/c2_globals.hpp | |||
ReduceFieldZeroing | OpenJDK6 | bool | c2 | true | product | When initializing fields, try to avoid needless zeroing | src/share/vm/opto/c2_globals.hpp | |||
ReduceInitialCardMarks | OpenJDK6 | bool | c2 | true | product | When initializing fields, try to avoid needless card marks | src/share/vm/opto/c2_globals.hpp | |||
ReduceSignalUsage | OpenJDK6 | bool | runtime | false | product | Reduce the use of OS signals in Java and/or the VM | src/share/vm/runtime/globals.hpp | |||
RefDiscoveryPolicy | OpenJDK6 | Obsoleted in JDK21 Expired in JDK24 | intx | runtime | 0 | product | Select type of reference discovery policy: reference-based(0) or referent-based(1) | src/share/vm/runtime/globals.hpp | ||
ReflectionWrapResolutionErrors | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: true | product | Temporary flag for transition to AbstractMethodError wrapped in InvocationTargetException. See 6531596 | src/share/vm/runtime/globals.hpp | |||
RegisterCostAreaRatio | OpenJDK6 | intx | c2 | develop_pd | Spill selection in reg allocator: scale area by (X/64K) before adding cost | src/share/vm/opto/c2_globals.hpp | ||||
RegisterCostAreaRatio | OpenJDK6 | intx | ppc | c2 | 16000 | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
RegisterCostAreaRatio | OpenJDK6 | intx | sparc | c2 | 12000 | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
RegisterCostAreaRatio | OpenJDK6 | intx | x86 | c2 | 16000 | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
RegisterFinalizersAtInit | OpenJDK6 | Deprecated in JDK22 Obsoleted in JDK23 Expired in JDK24 | bool | runtime | true | product | Register finalizable objects at end of Object. | src/share/vm/runtime/globals.hpp | ||
RegisterReferences | OpenJDK6 | bool | runtime | true | develop | Tell whether the VM should register soft/weak/final/phantom references | src/share/vm/runtime/globals.hpp | |||
RelaxAccessControlCheck | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Relax the access control checks in the verifier | src/share/vm/runtime/globals.hpp | |||
RenumberLiveNodes | OpenJDK8 | bool | c2 | true | develop | Renumber live nodes | src/share/vm/opto/c2_globals.hpp | |||
ReoptimizeCallSequences | OpenJDK7 | bool | ppc | true | product | Reoptimize code-sequences of calls at runtime. | src/cpu/ppc/vm/globals_ppc.hpp | |||
ReplayCompiles | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | develop | Enable replay of compilations from ReplayDataFile | src/share/vm/runtime/globals.hpp | |||
ReplayDataFile | OpenJDK8 | ccstr | runtime | EMBEDDED_ONLY: NULL | product | File containing compilation replay information [default: ./replay_pid%p.log] (%p replaced with pid) | src/share/vm/runtime/globals.hpp | |||
ReplayIgnoreInitErrors | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | develop | Ignore exceptions thrown during initialization for replay | src/share/vm/runtime/globals.hpp | |||
ReplaySuppressInitializers | OpenJDK8 | intx | runtime | EMBEDDED_ONLY: 2 | develop | Control handling of class initialization during replay: 0 - don't do anything special; 1 - treat all class initializers as empty; 2 - treat class initializers for application classes as empty; 3 - allow all class initializers to run during bootstrap but pretend they are empty after starting replay | src/share/vm/runtime/globals.hpp | |||
RequireSharedSpaces | OpenJDK6 | Deprecated in JDK18 Obsoleted in JDK19 | bool | runtime | EMBEDDED_ONLY: false | product | Require shared spaces for metadata | src/share/vm/runtime/globals.hpp | ||
ReservedCodeCacheSize | OpenJDK6 | intx | runtime | 32*M | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
ReservedCodeCacheSize | OpenJDK6 | uintx | runtime | product_pd | Reserved code cache size (in bytes) - maximum code cache size | src/share/vm/runtime/globals.hpp | ||||
ReservedCodeCacheSize | OpenJDK6 | intx | ppc | c2 | 256*M | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
ReservedCodeCacheSize | OpenJDK6 | intx | sparc | c1 | 32*M | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
ReservedCodeCacheSize | OpenJDK6 | intx | sparc | c2 | 32*M | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
ReservedCodeCacheSize | OpenJDK6 | intx | x86 | c1 | 32*M | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
ReservedCodeCacheSize | OpenJDK6 | intx | x86 | c2 | 48*M | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
ReservedCodeCacheSize | OpenJDK6 | intx | zero | shark | 32*M | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
ResizeOldPLAB | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Dynamically resize (old gen) promotion LAB's | src/share/vm/runtime/globals.hpp | ||
ResizePLAB | OpenJDK6 | bool | runtime | true | product | Dynamically resize (survivor space) promotion LAB's | src/share/vm/runtime/globals.hpp | |||
ResizeTLAB | OpenJDK6 | bool | runtime | product_pd | Dynamically resize TLAB size for threads | src/share/vm/runtime/globals.hpp | ||||
ResizeTLAB | OpenJDK6 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
ResizeTLAB | OpenJDK6 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
ResizeTLAB | OpenJDK6 | bool | sparc | c2 | true | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
ResizeTLAB | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
ResizeTLAB | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
ResizeTLAB | OpenJDK6 | bool | zero | shark | true | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
RestoreMXCSROnJNICalls | OpenJDK6 | bool | runtime | false | product | Restore MXCSR when returning from JNI calls | src/share/vm/runtime/globals.hpp | |||
RestrictContended | OpenJDK8 | bool | runtime | true | product | Restrict @Contended to trusted classes | src/share/vm/runtime/globals.hpp | |||
RewriteBytecodes | OpenJDK6 | bool | runtime | product_pd | Allow rewriting of bytecodes (bytecodes are not immutable) | src/share/vm/runtime/globals.hpp | ||||
RewriteBytecodes | OpenJDK6 | bool | ppc | true | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
RewriteBytecodes | OpenJDK6 | bool | sparc | true | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
RewriteBytecodes | OpenJDK6 | bool | x86 | true | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
RewriteBytecodes | OpenJDK6 | bool | zero | true | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
RewriteFrequentPairs | OpenJDK6 | bool | runtime | product_pd | Rewrite frequently used bytecode pairs into a single bytecode | src/share/vm/runtime/globals.hpp | ||||
RewriteFrequentPairs | OpenJDK6 | bool | ppc | true | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
RewriteFrequentPairs | OpenJDK6 | bool | sparc | true | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
RewriteFrequentPairs | OpenJDK6 | bool | x86 | true | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
RewriteFrequentPairs | OpenJDK6 | bool | zero | true | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
RotateCMSCollectionTypes | OpenJDK6 | bool | runtime | false | develop | Rotate the CMS collections among concurrent and STW | src/share/vm/runtime/globals.hpp | |||
RoundFPResults | OpenJDK6 | bool | c1 | develop_pd | Indicates whether rounding is needed for floating point results | src/share/vm/c1/c1_globals.hpp | ||||
RoundFPResults | OpenJDK6 | bool | sparc | c1 | false | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
RoundFPResults | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
SafepointALot | OpenJDK6 | bool | runtime | false | develop | Generate a lot of safepoints. This works with GuaranteedSafepointInterval | src/share/vm/runtime/globals.hpp | |||
SafepointPollOffset | OpenJDK6 | intx | c1 | product_pd | Offset added to polling address (Intel only) | src/share/vm/c1/c1_globals.hpp | ||||
SafepointPollOffset | OpenJDK6 | intx | sparc | c1 | 0 | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
SafepointPollOffset | OpenJDK6 | intx | x86 | c1 | 256 | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
SafepointSpinBeforeYield | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK11 Expired in JDK12 | intx | runtime | EMBEDDED_ONLY: 2000 | product | (Unstable) | src/share/vm/runtime/globals.hpp | ||
SafepointTimeoutDelay | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 10000 | product | Delay in milliseconds for option SafepointTimeout | src/share/vm/runtime/globals.hpp | |||
SafepointTimeout | OpenJDK6 | bool | runtime | false | product | Time out and warn or fail after SafepointTimeoutDelay milliseconds if failed to reach safepoint | src/share/vm/runtime/globals.hpp | |||
ScavengeALotInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1 | notproduct | Interval between which scavenge will occur with +ScavengeALot | src/share/vm/runtime/globals.hpp | |||
ScavengeALot | OpenJDK6 | bool | runtime | false | notproduct | Force scavenge at every Nth exit from the runtime system (N=ScavengeALotInterval) | src/share/vm/runtime/globals.hpp | |||
ScavengeBeforeFullGC | OpenJDK6 | Obsoleted in JDK23 Expired in JDK24 | bool | runtime | true | product | Scavenge youngest generation before each full GC, used with UseParallelGC | src/share/vm/runtime/globals.hpp | ||
ScavengeRootsInCode | OpenJDK6 | intx | runtime | 2 | diagnostic | 0: do not allow scavengable oops in the code cache; 1: allow scavenging from the code cache; 2: emit as many constants as the compiler can see | src/share/vm/runtime/globals.hpp | |||
ScavengeWithObjectsInToSpace | OpenJDK6 | bool | runtime | false | develop | Allow scavenges to occur when to-space contains objects | src/share/vm/runtime/globals.hpp | |||
SegmentedHeapDumpThreshold | OpenJDK6 | uintx | runtime | 2*G | develop | Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) when the heap usage is larger than this | src/share/vm/runtime/globals.hpp | |||
SelectivePhiFunctions | OpenJDK6 | bool | c1 | true | develop | create phi functions at loop headers only when necessary | src/share/vm/c1/c1_globals.hpp | |||
SelfDestructTimer | OpenJDK6 | intx | runtime | 0 | product | Will cause VM to terminate after a given time (in minutes) (0 means off) | src/share/vm/runtime/globals.hpp | |||
SerializeVMOutput | OpenJDK6 | bool | runtime | true | diagnostic | Use a mutex to serialize output to tty and LogFile | src/share/vm/runtime/globals.hpp | |||
ShareVtableStubs | OpenJDK6 | bool | runtime | develop_pd | Share vtable stubs (smaller code but worse branch prediction | src/share/vm/runtime/globals.hpp | ||||
ShareVtableStubs | OpenJDK6 | bool | ppc | false | define_pd_global | // Improves performance markedly for mtrt and compress. | src/cpu/ppc/vm/globals_ppc.hpp | |||
ShareVtableStubs | OpenJDK6 | bool | sparc | false | define_pd_global | // improves performance markedly for mtrt and compress | src/cpu/sparc/vm/globals_sparc.hpp | |||
ShareVtableStubs | OpenJDK6 | bool | x86 | true | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
ShareVtableStubs | OpenJDK6 | bool | zero | true | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
SharedArchiveFile | OpenJDK8 | ccstr | runtime | EMBEDDED_ONLY: NULL | diagnostic | Override the default location of the CDS archive file | src/share/vm/runtime/globals.hpp | |||
SharedBaseAddress | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: LP64_ONLY(32*G)NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)) | product | Address to allocate shared memory region for class data | src/share/vm/runtime/globals.hpp | |||
SharedClassListFile | OpenJDK8 | ccstr | runtime | EMBEDDED_ONLY: NULL | product | Override the default CDS class list | src/share/vm/runtime/globals.hpp | |||
SharedMiscCodeSize | OpenJDK6 | Obsoleted in JDK10 | uintx | runtime | EMBEDDED_ONLY: 120*K | product | Size of the shared miscellaneous code area (in bytes) | src/share/vm/runtime/globals.hpp | ||
SharedMiscDataSize | OpenJDK6 | Obsoleted in JDK10 | uintx | runtime | EMBEDDED_ONLY: NOT_LP64(2*M) LP64_ONLY(4*M) | product | Size of the shared miscellaneous data area (in bytes) | src/share/vm/runtime/globals.hpp | ||
SharedReadOnlySize | OpenJDK6 | Obsoleted in JDK10 | uintx | runtime | EMBEDDED_ONLY: NOT_LP64(12*M) LP64_ONLY(16*M) | product | Size of read-only space for metadata (in bytes) | src/share/vm/runtime/globals.hpp | ||
SharedReadWriteSize | OpenJDK6 | Obsoleted in JDK10 | uintx | runtime | EMBEDDED_ONLY: NOT_LP64(12*M) LP64_ONLY(16*M) | product | Size of read-write space for metadata (in bytes) | src/share/vm/runtime/globals.hpp | ||
SharkMaxInlineSize | OpenJDK6 | intx | shark | 32 | product | Maximum bytecode size of methods to inline when using Shark | src/share/vm/shark/shark_globals.hpp | |||
SharkOptimizationLevel | OpenJDK8 | ccstr | shark | Default | product | The optimization level passed to LLVM, possible values: None, Less, Default and Agressive | src/share/vm/shark/shark_globals.hpp | |||
SharkPerformanceWarnings | OpenJDK6 | bool | shark | false | diagnostic | Warn about things that could be made faster | src/share/vm/shark/shark_globals.hpp | |||
SharkPrintAsmOf | OpenJDK6 | ccstr | shark | NULL | diagnostic | Print the asm of the specified method | src/share/vm/shark/shark_globals.hpp | |||
SharkPrintBitcodeOf | OpenJDK6 | ccstr | shark | NULL | diagnostic | Print the LLVM bitcode of the specified method | src/share/vm/shark/shark_globals.hpp | |||
SharkPrintTypeflowOf | OpenJDK6 | ccstr | shark | NULL | develop | Print the typeflow of the specified method | src/share/vm/shark/shark_globals.hpp | |||
SharkTraceBytecodes | OpenJDK6 | bool | shark | false | develop | Trace bytecode compilation | src/share/vm/shark/shark_globals.hpp | |||
SharkTraceInstalls | OpenJDK6 | bool | shark | false | diagnostic | Trace method installation | src/share/vm/shark/shark_globals.hpp | |||
SharkVerifyFunction | OpenJDK8 | ccstr | shark | NULL | develop | Runs LLVM verify over LLVM IR | src/share/vm/shark/shark_globals.hpp | |||
ShowHiddenFrames | OpenJDK7 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | show method handle implementation frames (usually hidden) | src/share/vm/runtime/globals.hpp | |||
ShowMessageBoxOnError | OpenJDK6 | bool | runtime | false | product | Keep process alive on VM fatal error | src/share/vm/runtime/globals.hpp | |||
ShowSafepointMsgs | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | bool | runtime | false | develop | Show message about safepoint synchronization | src/share/vm/runtime/globals.hpp | ||
SoftMatchFailure | OpenJDK6 | bool | c2 | trueInProduct | develop | If the DFA fails to match a node, print a message and bail out | src/share/vm/opto/c2_globals.hpp | |||
SoftRefLRUPolicyMSPerMB | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1000 | product | Number of milliseconds per MB of free space in the heap | src/share/vm/runtime/globals.hpp | |||
SparcV9RegsHiBitsZero | OpenJDK6 | bool | c2 | true | develop | Assume Sparc V9 I&L registers on V8+ systems are zero-extended | src/share/vm/opto/c2_globals.hpp | |||
SpecTrapLimitExtraEntries | OpenJDK8 | intx | runtime | EMBEDDED_ONLY: 3 | experimental | Extra method data trap entries for speculation | src/share/vm/runtime/globals.hpp | |||
SpecialArraysEquals | OpenJDK6 | bool | c2 | true | develop | special version of Arrays.equals(char[],char[]) | src/share/vm/opto/c2_globals.hpp | |||
SpecialEncodeISOArray | OpenJDK8 | bool | c2 | true | product | special version of ISO_8859_1$Encoder.encodeISOArray | src/share/vm/opto/c2_globals.hpp | |||
SpecialStringCompareTo | OpenJDK6 | bool | c2 | true | develop | special version of string compareTo | src/share/vm/opto/c2_globals.hpp | |||
SpecialStringEquals | OpenJDK6 | bool | c2 | true | develop | special version of string equals | src/share/vm/opto/c2_globals.hpp | |||
SpecialStringIndexOf | OpenJDK6 | bool | c2 | true | develop | special version of string indexOf | src/share/vm/opto/c2_globals.hpp | |||
SplitIfBlocks | OpenJDK6 | bool | c2 | true | product | Clone compares and control flow through merge points to fold some branches | src/share/vm/opto/c2_globals.hpp | |||
StackPrintLimit | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 100 | develop | number of stack frames to print in VM-level stack dump | src/share/vm/runtime/globals.hpp | |||
StackRedPages | OpenJDK6 | intx | aix | ppc | 1 | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | |||
StackRedPages | OpenJDK6 | intx | linux | ppc | 1 | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | |||
StackRedPages | OpenJDK6 | intx | runtime | product_pd | Number of red zone (unrecoverable overflows) pages | src/share/vm/runtime/globals.hpp | ||||
StackRedPages | OpenJDK6 | intx | sparc | 1 | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
StackRedPages | OpenJDK6 | intx | x86 | 1 | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
StackRedPages | OpenJDK6 | intx | zero | 1 | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
StackShadowPages | OpenJDK6 | intx | aix | ppc | 6 DEBUG_ONLY(+2) | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | |||
StackShadowPages | OpenJDK6 | intx | linux | ppc | 6 DEBUG_ONLY(+2) | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | |||
StackShadowPages | OpenJDK6 | intx | runtime | product_pd | Number of shadow zone (for overflow checking) pages this should exceed the depth of the VM and native call stack | src/share/vm/runtime/globals.hpp | ||||
StackShadowPages | OpenJDK6 | intx | sparc | 3 DEBUG_ONLY(+1) | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
StackShadowPages | OpenJDK6 | intx | x86 | 4 DEBUG_ONLY(+5) | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
StackShadowPages | OpenJDK6 | intx | zero | 5 LP64_ONLY(+1) DEBUG_ONLY(+3) | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
StackTraceInThrowable | OpenJDK6 | bool | runtime | true | product | Collect backtrace in throwable when exception happens | src/share/vm/runtime/globals.hpp | |||
StackYellowPages | OpenJDK6 | intx | aix | ppc | 6 | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | |||
StackYellowPages | OpenJDK6 | intx | linux | ppc | 6 | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | |||
StackYellowPages | OpenJDK6 | intx | runtime | product_pd | Number of yellow zone (recoverable overflows) pages | src/share/vm/runtime/globals.hpp | ||||
StackYellowPages | OpenJDK6 | intx | sparc | 2 | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
StackYellowPages | OpenJDK6 | intx | x86 | NOT_WINDOWS(2) WINDOWS_ONLY(3) | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
StackYellowPages | OpenJDK6 | intx | zero | 2 | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
StartAttachListener | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Always start Attach Listener at VM startup | src/share/vm/runtime/globals.hpp | |||
StarvationMonitorInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 200 | product | Pause between each check (in milliseconds) | src/share/vm/runtime/globals.hpp | |||
StopInterpreterAt | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | develop | Stop interpreter execution at specified bytecode number | src/share/vm/runtime/globals.hpp | |||
StressCodeBuffers | OpenJDK6 | bool | runtime | false | develop | Exercise code buffer expansion and other rare state changes | src/share/vm/runtime/globals.hpp | |||
StressCompiledExceptionHandlers | OpenJDK7 | bool | runtime | false | develop | Exercise compiled exception handlers | src/share/vm/runtime/globals.hpp | |||
StressCriticalJNINatives | OpenJDK6 | bool | runtime | false | notproduct | Exercise register saving code in critical natives | src/share/vm/runtime/globals.hpp | |||
StressDerivedPointers | OpenJDK6 | bool | runtime | false | notproduct | Force scavenge when a derived pointer is detected on stack after rtm call | src/share/vm/runtime/globals.hpp | |||
StressGCM | OpenJDK8 | bool | c2 | false | develop | Randomize instruction scheduling in GCM | src/share/vm/opto/c2_globals.hpp | |||
StressLCM | OpenJDK8 | bool | c2 | false | develop | Randomize instruction scheduling in LCM | src/share/vm/opto/c2_globals.hpp | |||
StressLdcRewrite | OpenJDK6 | bool | runtime | false | product | Force ldc -> ldc_w rewrite during RedefineClasses | src/share/vm/runtime/globals.hpp | |||
StressLinearScan | OpenJDK6 | bool | c1 | false | develop | scramble block order used by LinearScan (stress test) | src/share/vm/c1/c1_globals.hpp | |||
StressLoopInvariantCodeMotion | OpenJDK8 | bool | c1 | false | develop | stress loop invariant code motion | src/share/vm/c1/c1_globals.hpp | |||
StressMethodComparator | OpenJDK6 | bool | runtime | false | develop | Run the MethodComparator on all loaded methods | src/share/vm/runtime/globals.hpp | |||
StressRangeCheckElimination | OpenJDK8 | bool | c1 | false | develop | stress Range Check Elimination | src/share/vm/c1/c1_globals.hpp | |||
StressRecompilation | OpenJDK6 | bool | c2 | false | develop | Recompile each compiled method without subsuming loads or escape analysis. | src/share/vm/opto/c2_globals.hpp | |||
StressReflectiveCode | OpenJDK6 | bool | c2 | false | develop | Use inexact types at allocations, etc., to test reflection | src/share/vm/opto/c2_globals.hpp | |||
StressRewriter | OpenJDK8 | bool | runtime | false | develop | Stress linktime bytecode rewriting | src/share/vm/runtime/globals.hpp | |||
StrictSafepointChecks | OpenJDK6 | bool | runtime | trueInDebug | notproduct | Enable strict checks that safepoints cannot happen for threads that use No_Safepoint_Verifier | src/share/vm/runtime/globals.hpp | |||
StringDeduplicationAgeThreshold | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: 3 | product | A string must reach this age (or be promoted to an old region) to be considered for deduplication | src/share/vm/runtime/globals.hpp | |||
StringDeduplicationRehashALot | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Force table rehash every time the table is scanned | src/share/vm/runtime/globals.hpp | |||
StringDeduplicationResizeALot | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Force table resize every time the table is scanned | src/share/vm/runtime/globals.hpp | |||
StringTableSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: defaultStringTableSize | product | Number of buckets in the interned String table | src/share/vm/runtime/globals.hpp | |||
SubsumeLoads | OpenJDK6 | bool | c2 | true | develop | Attempt to compile while subsuming loads into machine instructions. | src/share/vm/opto/c2_globals.hpp | |||
SuperWordRTDepCheck | OpenJDK6 | bool | c2 | false | develop | Enable runtime dependency checks. | src/share/vm/opto/c2_globals.hpp | |||
SuppressErrorAt | OpenJDK6 | ccstrlist | runtime | EMBEDDED_ONLY: | notproduct | List of assertions (file:line) to muzzle | src/share/vm/runtime/globals.hpp | |||
SuppressFatalErrorMessage | OpenJDK6 | bool | runtime | false | product | Report NO fatal error message (avoid deadlock) | src/share/vm/runtime/globals.hpp | |||
SurvivorAlignmentInBytes | OpenJDK8 | intx | runtime | EMBEDDED_ONLY: 0 | experimental | Default survivor space alignment in bytes | src/share/vm/runtime/globals.hpp | |||
SurvivorPadding | OpenJDK6 | uintx | runtime | 3 | product | How much buffer to keep for survivor overflow | src/share/vm/runtime/globals.hpp | |||
SurvivorRatio | OpenJDK6 | uintx | bsd | x86 | 8 | define_pd_global | src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp | |||
SurvivorRatio | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 8 | product | Ratio of eden/survivor space size | src/share/vm/runtime/globals.hpp | |||
SuspendRetryCount | OpenJDK6 | Obsoleted in JDK17 Expired in JDK18 | intx | runtime | 50 | product | Maximum retry count for an external suspend request | src/share/vm/runtime/globals.hpp | ||
SuspendRetryDelay | OpenJDK6 | Obsoleted in JDK17 Expired in JDK18 | intx | runtime | 5 | product | Milliseconds to delay per retry (* current_retry_count) | src/share/vm/runtime/globals.hpp | ||
SweeperLogEntries | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1024 | notproduct | Number of records in the ring buffer of sweeper activity | src/share/vm/runtime/globals.hpp | |||
SymbolTableSize | OpenJDK8 | uintx | runtime | EMBEDDED_ONLY: defaultSymbolTableSize | experimental | Number of buckets in the JVM internal Symbol table | src/share/vm/runtime/globals.hpp | |||
SyncFlags | OpenJDK6 | Obsoleted in JDK12 Expired in JDK13 | intx | runtime | 0 | product | (Unsafe, Unstable) Experimental Sync flags | src/share/vm/runtime/globals.hpp | ||
SyncKnobs | OpenJDK6 | Obsoleted in JDK12 Expired in JDK13 | ccstr | runtime | NULL | product | (Unstable) Various monitor synchronization tunables | src/share/vm/runtime/globals.hpp | ||
SyncVerbose | OpenJDK6 | Obsoleted in JDK12 Expired in JDK13 | intx | runtime | 0 | product | (Unstable) | src/share/vm/runtime/globals.hpp | ||
TLABAllocationWeight | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 35 | product | Allocation averaging weight | src/share/vm/runtime/globals.hpp | |||
TLABRefillWasteFraction | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 64 | product | Maximum TLAB waste at a refill (internal fragmentation) | src/share/vm/runtime/globals.hpp | |||
TLABSize | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 0 | product | Starting TLAB size (in bytes); zero means set ergonomically | src/share/vm/runtime/globals.hpp | |||
TLABStats | OpenJDK6 | Deprecated in JDK12 Obsoleted in JDK23 Expired in JDK24 | bool | runtime | true | product | Provide more detailed and expensive TLAB statistics (with PrintTLAB) | src/share/vm/runtime/globals.hpp | ||
TLABWasteIncrement | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 4 | product | Increment allowed waste at slow allocation | src/share/vm/runtime/globals.hpp | |||
TLABWasteTargetPercent | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 1 | product | Percentage of Eden that can be wasted | src/share/vm/runtime/globals.hpp | |||
TargetPLABWastePct | OpenJDK6 | uintx | runtime | 10 | product | Target wasted space in last buffer as percent of overall allocation | src/share/vm/runtime/globals.hpp | |||
TargetSurvivorRatio | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 50 | product | Desired percentage of survivor space used after scavenge | src/share/vm/runtime/globals.hpp | |||
TenuredGenerationSizeIncrement | OpenJDK6 | uintx | runtime | 20 | product | Adaptive size percentage change in tenured generation | src/share/vm/runtime/globals.hpp | |||
TenuredGenerationSizeSupplementDecay | OpenJDK6 | uintx | runtime | 2 | product | Decay factor to TenuredGenerationSizeIncrement | src/share/vm/runtime/globals.hpp | |||
TenuredGenerationSizeSupplement | OpenJDK6 | uintx | runtime | 80 | product | Supplement to TenuredGenerationSizeIncrement used at startup | src/share/vm/runtime/globals.hpp | |||
ThreadPriorityPolicy | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | product | 0 : Normal. VM chooses priorities that are appropriate for normal applications. On Solaris NORM_PRIORITY and above are mapped to normal native priority. Java priorities below NORM_PRIORITY map to lower native priority values. On Windows applications are allowed to use higher native priorities. However, with ThreadPriorityPolicy=0, VM will not use the highest possible native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with system threads. On Linux thread priorities are ignored because the OS does not support static priority in SCHED_OTHER scheduling class which is the only choice for non-root, non-realtime applications. 1 : Aggressive. Java thread priorities map over to the entire range of native thread priorities. Higher Java thread priorities map to higher native thread priorities. This policy should be used with care, as sometimes it can cause performance degradation in the application and/or the entire system. On Linux this policy requires root privilege. | src/share/vm/runtime/globals.hpp | |||
ThreadPriorityVerbose | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | Print priority changes | src/share/vm/runtime/globals.hpp | |||
ThreadSafetyMargin | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 50*M | product | Thread safety margin is used on fixed-stack LinuxThreads (on Linux/x86 only) to prevent heap-stack collision. Set to 0 to disable this feature | src/share/vm/runtime/globals.hpp | |||
ThreadStackSize | OpenJDK6 | intx | aix | ppc | 2048 | define_pd_global | // 0 => use system default | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | ||
ThreadStackSize | OpenJDK6 | intx | bsd | x86 | 320 | define_pd_global | src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp | |||
ThreadStackSize | OpenJDK6 | intx | bsd | zero | 1536 | define_pd_global | src/os_cpu/bsd_zero/vm/globals_bsd_zero.hpp | |||
ThreadStackSize | OpenJDK6 | intx | linux | ppc | 2048 | define_pd_global | // 0 => use system default | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | ||
ThreadStackSize | OpenJDK6 | intx | linux | x86 | 320 | define_pd_global | src/os_cpu/linux_x86/vm/globals_linux_x86.hpp | |||
ThreadStackSize | OpenJDK6 | intx | linux | zero | 1536 | define_pd_global | src/os_cpu/linux_zero/vm/globals_linux_zero.hpp | |||
ThreadStackSize | OpenJDK6 | intx | runtime | product_pd | Thread Stack Size (in Kbytes) | src/share/vm/runtime/globals.hpp | ||||
ThreadStackSize | OpenJDK6 | intx | sparc | 512 | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
ThreadStackSize | OpenJDK6 | intx | solaris | x86 | 320 | define_pd_global | src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp | |||
ThreadStackSize | OpenJDK6 | intx | windows | x86 | 0 | define_pd_global | // 0 => use system default | src/os_cpu/windows_x86/vm/globals_windows_x86.hpp | ||
ThresholdTolerance | OpenJDK6 | uintx | runtime | 10 | product | Allowed collection cost difference between generations | src/share/vm/runtime/globals.hpp | |||
Tier0BackedgeNotifyFreqLog | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 10 | product | Interpreter (tier 0) invocation notification frequency | src/share/vm/runtime/globals.hpp | |||
Tier0InvokeNotifyFreqLog | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 7 | product | Interpreter (tier 0) invocation notification frequency | src/share/vm/runtime/globals.hpp | |||
Tier0ProfilingStartPercentage | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 200 | product | Start profiling in interpreter if the counters exceed tier 3 thresholds by the specified percentage | src/share/vm/runtime/globals.hpp | |||
Tier23InlineeNotifyFreqLog | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 20 | product | Inlinee invocation (tiers 2 and 3) notification frequency | src/share/vm/runtime/globals.hpp | |||
Tier2BackEdgeThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | product | Back edge threshold at which tier 2 compilation is invoked | src/share/vm/runtime/globals.hpp | |||
Tier2BackEdgeThreshold | OpenJDK6 | intx | zero | shark | 100000 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
Tier2BackedgeNotifyFreqLog | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 14 | product | C1 without MDO (tier 2) invocation notification frequency | src/share/vm/runtime/globals.hpp | |||
Tier2CompileThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | product | threshold at which tier 2 compilation is invoked | src/share/vm/runtime/globals.hpp | |||
Tier2CompileThreshold | OpenJDK6 | intx | zero | shark | 1500 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
Tier2InvokeNotifyFreqLog | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 11 | product | C1 without MDO (tier 2) invocation notification frequency | src/share/vm/runtime/globals.hpp | |||
Tier3BackEdgeThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 60000 | product | Back edge threshold at which tier 3 OSR compilation is invoked | src/share/vm/runtime/globals.hpp | |||
Tier3BackEdgeThreshold | OpenJDK6 | intx | zero | shark | 100000 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
Tier3BackedgeNotifyFreqLog | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 13 | product | C1 with MDO profiling (tier 3) invocation notification frequency | src/share/vm/runtime/globals.hpp | |||
Tier3CompileThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 2000 | product | Threshold at which tier 3 compilation is invoked (invocation minimum must be satisfied | src/share/vm/runtime/globals.hpp | |||
Tier3CompileThreshold | OpenJDK6 | intx | zero | shark | 2500 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
Tier3DelayOff | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 2 | product | If C2 queue size is less than this amount per compiler thread allow methods compiled at tier 2 transition to tier 3 | src/share/vm/runtime/globals.hpp | |||
Tier3DelayOn | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 5 | product | If C2 queue size grows over this amount per compiler thread stop compiling at tier 3 and start compiling at tier 2 | src/share/vm/runtime/globals.hpp | |||
Tier3InvocationThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 200 | product | Compile if number of method invocations crosses this threshold | src/share/vm/runtime/globals.hpp | |||
Tier3InvokeNotifyFreqLog | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 10 | product | C1 with MDO profiling (tier 3) invocation notification frequency | src/share/vm/runtime/globals.hpp | |||
Tier3LoadFeedback | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 5 | product | Tier 3 thresholds will increase twofold when C1 queue size reaches this amount per compiler thread | src/share/vm/runtime/globals.hpp | |||
Tier3MinInvocationThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 100 | product | Minimum invocation to compile at tier 3 | src/share/vm/runtime/globals.hpp | |||
Tier4BackEdgeThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 40000 | product | Back edge threshold at which tier 4 OSR compilation is invoked | src/share/vm/runtime/globals.hpp | |||
Tier4BackEdgeThreshold | OpenJDK6 | intx | zero | shark | 100000 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
Tier4CompileThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 15000 | product | Threshold at which tier 4 compilation is invoked (invocation minimum must be satisfied | src/share/vm/runtime/globals.hpp | |||
Tier4CompileThreshold | OpenJDK6 | intx | zero | shark | 4500 | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
Tier4InvocationThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 5000 | product | Compile if number of method invocations crosses this threshold | src/share/vm/runtime/globals.hpp | |||
Tier4LoadFeedback | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 3 | product | Tier 4 thresholds will increase twofold when C2 queue size reaches this amount per compiler thread | src/share/vm/runtime/globals.hpp | |||
Tier4MinInvocationThreshold | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 600 | product | Minimum invocation to compile at tier 4 | src/share/vm/runtime/globals.hpp | |||
TieredCompilation | OpenJDK6 | bool | runtime | false | define_pd_global | src/share/vm/runtime/globals.hpp | ||||
TieredCompilation | OpenJDK6 | bool | runtime | product_pd | Enable tiered compilation | src/share/vm/runtime/globals.hpp | ||||
TieredCompilation | OpenJDK6 | bool | ppc | c2 | false | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
TieredCompilation | OpenJDK6 | bool | sparc | c1 | false | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
TieredCompilation | OpenJDK6 | bool | sparc | c2 | trueInTiered | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
TieredCompilation | OpenJDK6 | bool | x86 | c1 | false | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
TieredCompilation | OpenJDK6 | bool | x86 | c2 | trueInTiered | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
TieredCompilation | OpenJDK6 | bool | zero | shark | false | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
TieredCompileTaskTimeout | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 50 | product | Kill compile task if method was not used within given timeout in milliseconds | src/share/vm/runtime/globals.hpp | |||
TieredRateUpdateMaxTime | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 25 | product | Maximum rate sampling interval (in milliseconds) | src/share/vm/runtime/globals.hpp | |||
TieredRateUpdateMinTime | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 1 | product | Minimum rate sampling interval (in milliseconds) | src/share/vm/runtime/globals.hpp | |||
TieredStopAtLevel | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 4 | product | Stop at given compilation level | src/share/vm/runtime/globals.hpp | |||
TimeCompilationPolicy | OpenJDK6 | bool | runtime | false | develop | Time the compilation policy | src/share/vm/runtime/globals.hpp | |||
TimeCompiler2 | OpenJDK6 | bool | c2 | false | notproduct | detailed time the compiler (requires +TimeCompiler) | src/share/vm/opto/c2_globals.hpp | |||
TimeCompiler | OpenJDK6 | bool | runtime | false | notproduct | Time the compiler | src/share/vm/runtime/globals.hpp | |||
TimeEachLinearScan | OpenJDK6 | bool | c1 | false | develop | print detailed timing of each LinearScan run | src/share/vm/c1/c1_globals.hpp | |||
TimeLinearScan | OpenJDK6 | bool | c1 | false | product | detailed timing of LinearScan phases | src/share/vm/c1/c1_globals.hpp | |||
TimeLivenessAnalysis | OpenJDK6 | bool | runtime | false | develop | Time computation of bytecode liveness analysis | src/share/vm/runtime/globals.hpp | |||
TimeOopMap2 | OpenJDK6 | bool | runtime | false | develop | Time calls to GenerateOopMap::compute_map() individually | src/share/vm/runtime/globals.hpp | |||
TimeOopMap | OpenJDK6 | bool | runtime | false | develop | Time calls to GenerateOopMap::compute_map() in sum | src/share/vm/runtime/globals.hpp | |||
TotalHandleAllocationLimit | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 1024 | develop | Threshold for total handle allocation when +TraceHandleAllocation is used | src/share/vm/runtime/globals.hpp | |||
TraceAdaptiveGCBoundary | OpenJDK6 | bool | runtime | false | develop | Trace young-old boundary moves | src/share/vm/runtime/globals.hpp | |||
TraceBiasedLocking | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Trace biased locking in JVM | src/share/vm/runtime/globals.hpp | ||
TraceBlockOffsetTable | OpenJDK6 | bool | runtime | false | develop | Print BlockOffsetTable maps | src/share/vm/runtime/globals.hpp | |||
TraceBytecodesAt | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | develop | Trace bytecodes starting with specified bytecode number | src/share/vm/runtime/globals.hpp | |||
TraceBytecodes | OpenJDK6 | bool | runtime | false | develop | Trace bytecode execution | src/share/vm/runtime/globals.hpp | |||
TraceCISCSpill | OpenJDK6 | bool | c2 | false | notproduct | Trace allocators use of cisc spillable instructions | src/share/vm/opto/c2_globals.hpp | |||
TraceCMSState | OpenJDK6 | bool | runtime | false | develop | Trace the state of the CMS collection | src/share/vm/runtime/globals.hpp | |||
TraceCallFixup | OpenJDK6 | bool | runtime | false | develop | Trace all call fixups | src/share/vm/runtime/globals.hpp | |||
TraceCardTableModRefBS | OpenJDK6 | bool | runtime | false | develop | Print CardTableModRefBS maps | src/share/vm/runtime/globals.hpp | |||
TraceClassInitialization | OpenJDK6 | bool | runtime | false | develop | Trace class initialization | src/share/vm/runtime/globals.hpp | |||
TraceClassLoaderData | OpenJDK8 | bool | runtime | false | develop | Trace class loader loader_data lifetime | src/share/vm/runtime/globals.hpp | |||
TraceClassLoadingPreorder | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Trace all classes loaded in order referenced (not loaded) | src/share/vm/runtime/globals.hpp | ||
TraceClassLoading | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product_rw | Trace all classes loaded | src/share/vm/runtime/globals.hpp | ||
TraceClassPaths | OpenJDK8 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Trace processing of class paths | src/share/vm/runtime/globals.hpp | ||
TraceClassResolution | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Trace all constant pool resolutions (for debugging) | src/share/vm/runtime/globals.hpp | ||
TraceClassUnloading | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product_rw | Trace unloading of classes | src/share/vm/runtime/globals.hpp | ||
TraceClearedExceptions | OpenJDK6 | bool | runtime | false | develop | Print when an exception is forcibly cleared | src/share/vm/runtime/globals.hpp | |||
TraceCodeBlobStacks | OpenJDK6 | bool | runtime | false | notproduct | Trace stack-walk of codeblobs | src/share/vm/runtime/globals.hpp | |||
TraceCompilationPolicy | OpenJDK6 | bool | runtime | false | develop | Trace compilation policy | src/share/vm/runtime/globals.hpp | |||
TraceCompiledIC | OpenJDK6 | bool | runtime | false | develop | Trace changes of compiled IC | src/share/vm/runtime/globals.hpp | |||
TraceCreateZombies | OpenJDK6 | bool | runtime | false | develop | trace creation of zombie nmethods | src/share/vm/runtime/globals.hpp | |||
TraceDefaultMethods | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | develop | Trace the default method processing steps | src/share/vm/runtime/globals.hpp | |||
TraceDeoptimization | OpenJDK6 | bool | runtime | false | develop | Trace deoptimization | src/share/vm/runtime/globals.hpp | |||
TraceDependencies | OpenJDK6 | bool | runtime | false | develop | Trace dependencies | src/share/vm/runtime/globals.hpp | |||
TraceDerivedPointers | OpenJDK6 | bool | runtime | false | develop | Trace traversal of derived pointers on stack | src/share/vm/runtime/globals.hpp | |||
TraceDynamicGCThreads | OpenJDK6 | bool | runtime | false | product | Trace the dynamic GC thread usage | src/share/vm/runtime/globals.hpp | |||
TraceExceptions | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | develop | Trace exceptions | src/share/vm/runtime/globals.hpp | ||
TraceFPURegisterUsage | OpenJDK6 | bool | c1 | false | develop | Trace usage of FPU registers at start of blocks (intel only) | src/share/vm/c1/c1_globals.hpp | |||
TraceFPUStack | OpenJDK6 | bool | c1 | false | develop | Trace emulation of the FPU stack (intel only) | src/share/vm/c1/c1_globals.hpp | |||
TraceFinalizerRegistration | OpenJDK6 | bool | runtime | false | develop | Trace registration of final references | src/share/vm/runtime/globals.hpp | |||
TraceFrequencyInlining | OpenJDK6 | bool | runtime | false | develop | Trace frequency based inlining | src/share/vm/runtime/globals.hpp | |||
TraceGCTaskManager | OpenJDK6 | bool | runtime | false | develop | Trace actions of the GC task manager | src/share/vm/runtime/globals.hpp | |||
TraceGCTaskQueue | OpenJDK6 | bool | runtime | false | develop | Trace actions of the GC task queues | src/share/vm/runtime/globals.hpp | |||
TraceGCTaskThread | OpenJDK6 | bool | runtime | false | diagnostic | Trace actions of the GC task threads | src/share/vm/runtime/globals.hpp | |||
TraceGen0Time | OpenJDK6 | bool | runtime | false | product | Trace accumulated time for Gen 0 collection | src/share/vm/runtime/globals.hpp | |||
TraceGen1Time | OpenJDK6 | bool | runtime | false | product | Trace accumulated time for Gen 1 collection | src/share/vm/runtime/globals.hpp | |||
TraceHandleAllocation | OpenJDK6 | bool | runtime | false | develop | Print out warnings when suspiciously many handles are allocated | src/share/vm/runtime/globals.hpp | |||
TraceICBuffer | OpenJDK6 | bool | runtime | false | develop | Trace usage of IC buffer | src/share/vm/runtime/globals.hpp | |||
TraceICs | OpenJDK6 | bool | runtime | false | develop | Trace inline cache changes | src/share/vm/runtime/globals.hpp | |||
TraceInlineCacheClearing | OpenJDK6 | bool | runtime | false | develop | Trace clearing of inline caches in nmethods | src/share/vm/runtime/globals.hpp | |||
TraceInvocationCounterOverflow | OpenJDK6 | bool | runtime | false | notproduct | Trace method invocation counter overflow | src/share/vm/runtime/globals.hpp | |||
TraceInvokeDynamic | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | EMBEDDED_ONLY: false | develop | trace internal invoke dynamic operations | src/share/vm/runtime/globals.hpp | ||
TraceItables | OpenJDK6 | bool | runtime | false | develop | Trace initialization and use of itables | src/share/vm/runtime/globals.hpp | |||
TraceIterativeGVN | OpenJDK6 | bool | c2 | false | develop | Print progress during Iterative Global Value Numbering | src/share/vm/opto/c2_globals.hpp | |||
TraceJNICalls | OpenJDK6 | bool | runtime | false | develop | Trace JNI calls | src/share/vm/runtime/globals.hpp | |||
TraceJNIHandleAllocation | OpenJDK6 | bool | runtime | false | develop | Trace allocation/deallocation of JNI handle blocks | src/share/vm/runtime/globals.hpp | |||
TraceJVMCalls | OpenJDK6 | bool | runtime | false | notproduct | Trace JVM calls | src/share/vm/runtime/globals.hpp | |||
TraceJVMTIObjectTagging | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | diagnostic | Trace JVMTI object tagging calls | src/share/vm/runtime/globals.hpp | ||
TraceJVMTI | OpenJDK6 | ccstr | runtime | NULL | product | Trace flags for JVMTI functions and events | src/share/vm/runtime/globals.hpp | |||
TraceJavaAssertions | OpenJDK6 | bool | runtime | false | develop | Trace java language assertions | src/share/vm/runtime/globals.hpp | |||
TraceJumps | OpenJDK6 | bool | runtime | false | develop | Trace assembly jumps in thread ring buffer | src/share/vm/runtime/globals.hpp | |||
TraceLinearScanLevel | OpenJDK6 | intx | c1 | 0 | develop | Debug levels for the linear scan allocator | src/share/vm/c1/c1_globals.hpp | |||
TraceLivenessGen | OpenJDK6 | bool | runtime | false | develop | Trace the generation of liveness analysis information | src/share/vm/runtime/globals.hpp | |||
TraceLivenessQuery | OpenJDK6 | bool | runtime | false | notproduct | Trace queries of liveness analysis information | src/share/vm/runtime/globals.hpp | |||
TraceLoaderConstraints | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product_rw | Trace loader constraints | src/share/vm/runtime/globals.hpp | ||
TraceLongCompiles | OpenJDK6 | bool | runtime | false | develop | Print out every time compilation is longer than a given threshold | src/share/vm/runtime/globals.hpp | |||
TraceLoopLimitCheck | OpenJDK6 | bool | c2 | false | develop | Trace generation of loop limits checks | src/share/vm/opto/c2_globals.hpp | |||
TraceLoopOpts | OpenJDK6 | bool | c2 | false | develop | Trace executed loop optimizations | src/share/vm/opto/c2_globals.hpp | |||
TraceLoopPredicate | OpenJDK6 | bool | c2 | false | develop | Trace generation of loop predicates | src/share/vm/opto/c2_globals.hpp | |||
TraceLoopUnswitching | OpenJDK6 | bool | c2 | false | notproduct | Trace loop unswitching | src/share/vm/opto/c2_globals.hpp | |||
TraceMarkSweep | OpenJDK6 | bool | runtime | false | notproduct | Trace mark sweep | src/share/vm/runtime/globals.hpp | |||
TraceMetadataChunkAllocation | OpenJDK8 | bool | runtime | false | develop | Trace chunk metadata allocations | src/share/vm/runtime/globals.hpp | |||
TraceMetadataHumongousAllocation | OpenJDK8 | bool | runtime | false | product | Trace humongous metadata allocations | src/share/vm/runtime/globals.hpp | |||
TraceMetavirtualspaceAllocation | OpenJDK8 | bool | runtime | false | develop | Trace virtual space metadata allocations | src/share/vm/runtime/globals.hpp | |||
TraceMethodHandles | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | EMBEDDED_ONLY: false | develop | trace internal method handle operations | src/share/vm/runtime/globals.hpp | ||
TraceMethodReplacement | OpenJDK6 | bool | runtime | false | develop | Print when methods are replaced do to recompilation | src/share/vm/runtime/globals.hpp | |||
TraceMonitorInflation | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Trace monitor inflation in JVM | src/share/vm/runtime/globals.hpp | ||
TraceMonitorMismatch | OpenJDK6 | bool | runtime | false | develop | Trace monitor matching failures during OopMapGeneration | src/share/vm/runtime/globals.hpp | |||
TraceNMethodInstalls | OpenJDK6 | Deprecated in JDK13 Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | diagnostic | Trace nmethod installation | src/share/vm/runtime/globals.hpp | ||
TraceNewOopMapGenerationDetailed | OpenJDK6 | bool | runtime | false | develop | Trace OopMapGeneration: print detailed cell states | src/share/vm/runtime/globals.hpp | |||
TraceNewOopMapGeneration | OpenJDK6 | bool | runtime | false | develop | Trace OopMapGeneration | src/share/vm/runtime/globals.hpp | |||
TraceNewVectors | OpenJDK7 | bool | c2 | false | notproduct | Trace creation of Vector nodes | src/share/vm/opto/c2_globals.hpp | |||
TraceOnStackReplacement | OpenJDK6 | bool | runtime | false | notproduct | Trace on stack replacement | src/share/vm/runtime/globals.hpp | |||
TraceOopMapGeneration | OpenJDK6 | bool | runtime | false | develop | Show OopMapGeneration | src/share/vm/runtime/globals.hpp | |||
TraceOopMapRewrites | OpenJDK6 | bool | runtime | false | develop | Trace rewriting of method oops during oop map generation | src/share/vm/runtime/globals.hpp | |||
TraceOptimizeFill | OpenJDK6 | bool | c2 | false | develop | print detailed information about fill conversion | src/share/vm/opto/c2_globals.hpp | |||
TraceOptoOutput | OpenJDK6 | bool | c2 | false | notproduct | Trace pipelining information | src/share/vm/opto/c2_globals.hpp | |||
TraceOptoParse | OpenJDK6 | bool | c2 | false | develop | Trace bytecode parse and control-flow merge | src/share/vm/opto/c2_globals.hpp | |||
TraceOptoPipelining | OpenJDK6 | bool | c2 | false | notproduct | Trace pipelining information | src/share/vm/opto/c2_globals.hpp | |||
TracePageSizes | OpenJDK6 | bool | runtime | false | develop | Trace page size selection and usage | src/share/vm/runtime/globals.hpp | |||
TraceParallelOldGCCompactionPhase | OpenJDK6 | bool | runtime | false | develop | Trace compaction phase in ParallelOldGC | src/share/vm/runtime/globals.hpp | |||
TraceParallelOldGCDensePrefix | OpenJDK6 | bool | runtime | false | develop | Trace dense prefix computation for ParallelOldGC | src/share/vm/runtime/globals.hpp | |||
TraceParallelOldGCMarkingPhase | OpenJDK6 | bool | runtime | false | develop | Trace marking phase in ParallelOldGC | src/share/vm/runtime/globals.hpp | |||
TraceParallelOldGCSummaryPhase | OpenJDK6 | bool | runtime | false | develop | Trace summary phase in ParallelOldGC | src/share/vm/runtime/globals.hpp | |||
TraceParallelOldGCTasks | OpenJDK6 | bool | runtime | false | product | Trace multithreaded GC activity | src/share/vm/runtime/globals.hpp | |||
TracePartialPeeling | OpenJDK6 | bool | c2 | false | notproduct | Trace partial peeling (loop rotation) information | src/share/vm/opto/c2_globals.hpp | |||
TracePatching | OpenJDK6 | bool | c1 | false | develop | Trace patching of field access on uninitialized classes | src/share/vm/c1/c1_globals.hpp | |||
TracePcPatching | OpenJDK6 | bool | runtime | false | develop | Trace usage of frame::patch_pc | src/share/vm/runtime/globals.hpp | |||
TracePhaseCCP | OpenJDK6 | bool | c2 | false | notproduct | Print progress during Conditional Constant Propagation | src/share/vm/opto/c2_globals.hpp | |||
TracePostallocExpand | OpenJDK8 | bool | c2 | false | develop | Trace expanding nodes after register allocation. | src/share/vm/opto/c2_globals.hpp | |||
TracePredicateFailedTraps | OpenJDK8 | bool | c1 | false | develop | trace runtime traps caused by predicate failure | src/share/vm/c1/c1_globals.hpp | |||
TraceProfileInterpreter | OpenJDK7 | bool | runtime | false | develop | Trace profiling at the bytecode level during interpretation. This outputs the profiling information collected to improve jit compilation. | src/share/vm/runtime/globals.hpp | |||
TraceProfileTripCount | OpenJDK6 | bool | c2 | false | notproduct | Trace profile loop trip count information | src/share/vm/opto/c2_globals.hpp | |||
TraceProtectionDomainVerification | OpenJDK6 | bool | runtime | false | develop | Trace protection domain verification | src/share/vm/runtime/globals.hpp | |||
TraceRangeCheckElimination | OpenJDK8 | bool | c1 | false | develop | Trace Range Check Elimination | src/share/vm/c1/c1_globals.hpp | |||
TraceRangeLimitCheck | OpenJDK6 | bool | c2 | false | develop | Trace additional overflow checks in RCE | src/share/vm/opto/c2_globals.hpp | |||
TraceRedefineClasses | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | intx | runtime | 0 | product | Trace level for JVMTI RedefineClasses | src/share/vm/runtime/globals.hpp | ||
TraceReferenceGC | OpenJDK6 | bool | runtime | false | develop | Trace handling of soft/weak/final/phantom references | src/share/vm/runtime/globals.hpp | |||
TraceRelocator | OpenJDK6 | bool | runtime | false | develop | Trace the bytecode relocator | src/share/vm/runtime/globals.hpp | |||
TraceRuntimeCalls | OpenJDK6 | bool | runtime | false | notproduct | Trace run-time calls | src/share/vm/runtime/globals.hpp | |||
TraceSafepointCleanupTime | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Print the break down of clean up tasks performed during safepoint | src/share/vm/runtime/globals.hpp | ||
TraceSafepoint | OpenJDK6 | bool | runtime | false | develop | Trace safepoint operations | src/share/vm/runtime/globals.hpp | |||
TraceScavenge | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | bool | runtime | false | notproduct | Trace scavenge | src/share/vm/runtime/globals.hpp | ||
TraceSpilling | OpenJDK6 | bool | c2 | false | notproduct | Trace spilling | src/share/vm/opto/c2_globals.hpp | |||
TraceStartupTime | OpenJDK6 | bool | runtime | false | develop | Trace setup time | src/share/vm/runtime/globals.hpp | |||
TraceSuperWord | OpenJDK6 | bool | c2 | false | notproduct | Trace superword transforms | src/share/vm/opto/c2_globals.hpp | |||
TraceSuspendWaitFailures | OpenJDK6 | Obsoleted in JDK17 Expired in JDK18 | bool | runtime | false | product | Trace external suspend wait failures | src/share/vm/runtime/globals.hpp | ||
TraceThreadEvents | OpenJDK6 | bool | runtime | false | develop | Trace all thread events | src/share/vm/runtime/globals.hpp | |||
TraceTraps | OpenJDK7 | bool | ppc | false | product | Trace all traps the signal handler handles. | src/cpu/ppc/vm/globals_ppc.hpp | |||
TraceTypeProfile | OpenJDK6 | bool | c2 | false | diagnostic | Trace type profile | src/share/vm/opto/c2_globals.hpp | |||
TraceVMOperation | OpenJDK6 | bool | runtime | false | develop | Trace VM operations | src/share/vm/runtime/globals.hpp | |||
TraceWorkGang | OpenJDK6 | bool | runtime | false | develop | Trace activities of work gangs | src/share/vm/runtime/globals.hpp | |||
TraceZapDeadLocals | OpenJDK6 | bool | runtime | false | notproduct | Trace zapping dead locals | src/share/vm/runtime/globals.hpp | |||
TraceZapUnusedHeapArea | OpenJDK6 | bool | runtime | false | develop | Trace zapping of unused heap space | src/share/vm/runtime/globals.hpp | |||
TrackedInitializationLimit | OpenJDK6 | intx | c2 | 50 | product | When initializing fields, track up to this many words | src/share/vm/opto/c2_globals.hpp | |||
TransmitErrorReport | OpenJDK6 | Obsoleted in JDK12 Expired in JDK13 | bool | runtime | EMBEDDED_ONLY: false | product | Enable error report transmission on erroneous termination | src/share/vm/runtime/globals.hpp | ||
TrapBasedICMissChecks | OpenJDK7 | bool | ppc | true | product | Raise and handle SIGTRAP if inline cache miss detected. | src/cpu/ppc/vm/globals_ppc.hpp | |||
TrapBasedNotEntrantChecks | OpenJDK7 | bool | ppc | true | product | Raise and handle SIGTRAP if calling not entrant or zombie method. | src/cpu/ppc/vm/globals_ppc.hpp | |||
TrapBasedNullChecks | OpenJDK7 | bool | runtime | product_pd | Generate code for null checks that uses a cmp and trap instruction raising SIGTRAP. This is only used if an access to null (+offset) will not raise a SIGSEGV, i.e., ImplicitNullChecks don't work (PPC64). | src/share/vm/runtime/globals.hpp | ||||
TrapBasedNullChecks | OpenJDK7 | bool | ppc | true | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
TrapBasedNullChecks | OpenJDK7 | bool | sparc | false | define_pd_global | // Not needed on sparc. | src/cpu/sparc/vm/globals_sparc.hpp | |||
TrapBasedNullChecks | OpenJDK7 | bool | x86 | false | define_pd_global | // Not needed on x86. | src/cpu/x86/vm/globals_x86.hpp | |||
TrapBasedNullChecks | OpenJDK7 | bool | zero | false | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
TrapBasedRangeChecks | OpenJDK7 | bool | c2 | product_pd | Generate code for range checks that uses a cmp and trap instruction raising SIGTRAP. Used on PPC64. | src/share/vm/opto/c2_globals.hpp | ||||
TrapBasedRangeChecks | OpenJDK7 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
TrapBasedRangeChecks | OpenJDK7 | bool | sparc | c2 | false | define_pd_global | // Not needed on sparc. | src/cpu/sparc/vm/c2_globals_sparc.hpp | ||
TrapBasedRangeChecks | OpenJDK7 | bool | x86 | c2 | false | define_pd_global | // Not needed on x86. | src/cpu/x86/vm/c2_globals_x86.hpp | ||
TrustFinalNonStaticFields | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | experimental | trust final non-static declarations for constant folding | src/share/vm/runtime/globals.hpp | |||
TwoOperandLIRForm | OpenJDK6 | bool | c1 | develop_pd | true if LIR requires src1 and dst to match in binary LIR ops | src/share/vm/c1/c1_globals.hpp | ||||
TwoOperandLIRForm | OpenJDK6 | bool | sparc | c1 | false | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
TwoOperandLIRForm | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
TypeProfileArgsLimit | OpenJDK8 | intx | runtime | 2 | product | max number of call arguments to consider for type profiling | src/share/vm/runtime/globals.hpp | |||
TypeProfileCasts | OpenJDK6 | bool | runtime | true | develop | treat casts like calls for purposes of type profiling | src/share/vm/runtime/globals.hpp | |||
TypeProfileLevel | OpenJDK8 | uintx | runtime | product_pd | =XYZ, with Z: Type profiling of arguments at call; Y: Type profiling of return value at call; X: Type profiling of parameters to methods; X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods | src/share/vm/runtime/globals.hpp | ||||
TypeProfileLevel | OpenJDK8 | uintx | ppc | 0 | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | ||||
TypeProfileLevel | OpenJDK8 | uintx | sparc | 0 | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
TypeProfileLevel | OpenJDK8 | uintx | x86 | 111 | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | ||||
TypeProfileLevel | OpenJDK8 | uintx | zero | 0 | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
TypeProfileMajorReceiverPercent | OpenJDK6 | intx | c2 | 90 | product | % of major receiver type to all profiled receivers | src/share/vm/opto/c2_globals.hpp | |||
TypeProfileParmsLimit | OpenJDK8 | intx | runtime | 2 | product | max number of incoming parameters to consider for type profiling , -1 for all | src/share/vm/runtime/globals.hpp | |||
TypeProfileWidth | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 2 | product | Number of receiver types to record in call/cast profile | src/share/vm/runtime/globals.hpp | |||
UncommonNullCast | OpenJDK6 | bool | runtime | develop_pd | track occurrences of null in casts; adjust compiler tactics | src/share/vm/runtime/globals.hpp | ||||
UncommonNullCast | OpenJDK6 | bool | ppc | true | define_pd_global | // Uncommon-trap NULLs passed to check cast. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UncommonNullCast | OpenJDK6 | bool | sparc | true | define_pd_global | // Uncommon-trap NULLs passed to check cast | src/cpu/sparc/vm/globals_sparc.hpp | |||
UncommonNullCast | OpenJDK6 | bool | x86 | true | define_pd_global | // Uncommon-trap NULLs passed to check cast | src/cpu/x86/vm/globals_x86.hpp | |||
UncommonNullCast | OpenJDK6 | bool | zero | true | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | ||||
UnguardOnExecutionViolation | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | product | Unguard page and retry on no-execute fault (Win32 only) 0=off, 1=conservative, 2=aggressive | src/share/vm/runtime/globals.hpp | |||
UnlinkSymbolsALot | OpenJDK6 | Deprecated in JDK11 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | false | product | Unlink unreferenced symbols from the symbol table at safepoints | src/share/vm/runtime/globals.hpp | ||
UnlockDiagnosticVMOptions | OpenJDK6 | bool | runtime | trueInDebug | diagnostic | Enable normal processing of flags relating to field diagnostics | src/share/vm/runtime/globals.hpp | |||
UnlockExperimentalVMOptions | OpenJDK6 | bool | runtime | false | experimental | Enable normal processing of flags relating to experimental features | src/share/vm/runtime/globals.hpp | |||
UnrollLimitCheck | OpenJDK6 | bool | c2 | true | diagnostic | Additional overflow checks during loop unroll | src/share/vm/opto/c2_globals.hpp | |||
UnrollLimitForProfileCheck | OpenJDK6 | intx | c2 | 1 | develop | Don't use profile_trip_cnt() to restrict unrolling until unrolling would push the number of unrolled iterations above UnrollLimitForProfileCheck. A higher value allows more unrolling. Zero acts as a very large value. | src/share/vm/opto/c2_globals.hpp | |||
UnsyncloadClass | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK11 Expired in JDK12 | bool | runtime | false | diagnostic | Unstable: VM calls loadClass unsynchronized. Custom class loader must call VM synchronized for findClass and defineClass. | src/share/vm/runtime/globals.hpp | ||
Use16MPages | OpenJDK7 | bool | aix | false | define_pd_global | src/os/aix/vm/globals_aix.hpp | ||||
Use24BitFPMode | OpenJDK6 | bool | c2 | true | develop | Set 24-bit FPU mode on a per-compile basis | src/share/vm/opto/c2_globals.hpp | |||
Use24BitFP | OpenJDK6 | bool | c2 | true | develop | use FP instructions that produce 24-bit precise results | src/share/vm/opto/c2_globals.hpp | |||
Use486InstrsOnly | OpenJDK6 | bool | x86 | false | product | Use 80486 Compliant instruction subset | src/cpu/x86/vm/globals_x86.hpp | |||
UseAESIntrinsics | OpenJDK7 | bool | runtime | false | product | Use intrinsics for AES versions of crypto | src/share/vm/runtime/globals.hpp | |||
UseAES | OpenJDK7 | bool | runtime | false | product | Control whether AES instructions can be used on x86/x64 | src/share/vm/runtime/globals.hpp | |||
UseAVX | OpenJDK6 | intx | x86 | 99 | product | Highest supported AVX instructions set on x86/x64 | src/cpu/x86/vm/globals_x86.hpp | |||
UseAdaptiveGCBoundary | OpenJDK6 | Obsoleted in JDK15 Expired in JDK16 | bool | runtime | false | product | Allow young-old boundary to move | src/share/vm/runtime/globals.hpp | ||
UseAdaptiveGenerationSizePolicyAtMajorCollection | OpenJDK6 | bool | runtime | true | product | Use adaptive young-old sizing policies at major collections | src/share/vm/runtime/globals.hpp | |||
UseAdaptiveGenerationSizePolicyAtMinorCollection | OpenJDK6 | bool | runtime | true | product | Use adaptive young-old sizing policies at minor collections | src/share/vm/runtime/globals.hpp | |||
UseAdaptiveNUMAChunkSizing | OpenJDK6 | bool | runtime | true | product | Enable adaptive chunk sizing for NUMA | src/share/vm/runtime/globals.hpp | |||
UseAdaptiveSizeDecayMajorGCCost | OpenJDK6 | bool | runtime | true | product | Adaptive size decays the major cost for long major intervals | src/share/vm/runtime/globals.hpp | |||
UseAdaptiveSizePolicyFootprintGoal | OpenJDK6 | bool | runtime | true | product | Use adaptive minimum footprint as a goal | src/share/vm/runtime/globals.hpp | |||
UseAdaptiveSizePolicyWithSystemGC | OpenJDK6 | bool | runtime | false | product | Include statistics from System.gc() for adaptive size policy | src/share/vm/runtime/globals.hpp | |||
UseAdaptiveSizePolicy | OpenJDK6 | bool | runtime | true | product | Use adaptive generation sizing policies | src/share/vm/runtime/globals.hpp | |||
UseAddressNop | OpenJDK6 | bool | x86 | false | product | Use '0F 1F [addr]' NOP instructions on x86 cpus | src/cpu/x86/vm/globals_x86.hpp | |||
UseAltSigs | OpenJDK6 | bool | runtime | false | product | Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM internal signals (Solaris only) | src/share/vm/runtime/globals.hpp | |||
UseAsyncConcMarkSweepGC | OpenJDK6 | bool | runtime | true | develop | Use Asynchronous Concurrent Mark-Sweep GC in the old generation | src/share/vm/runtime/globals.hpp | |||
UseAutoGCSelectPolicy | OpenJDK6 | bool | runtime | false | product | Use automatic collection selection policy | src/share/vm/runtime/globals.hpp | |||
UseBMI1Instructions | OpenJDK8 | bool | x86 | false | product | Use BMI1 instructions | src/cpu/x86/vm/globals_x86.hpp | |||
UseBMI2Instructions | OpenJDK8 | bool | x86 | false | product | Use BMI2 instructions | src/cpu/x86/vm/globals_x86.hpp | |||
UseBiasedLocking | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK18 Expired in JDK19 | bool | runtime | true | product | Enable biased locking in JVM | src/share/vm/runtime/globals.hpp | ||
UseBimorphicInlining | OpenJDK6 | bool | c2 | true | product | Profiling based inlining for two receivers | src/share/vm/opto/c2_globals.hpp | |||
UseBlockCopy | OpenJDK6 | bool | sparc | false | product | Use special cpu instructions for block copy | src/cpu/sparc/vm/globals_sparc.hpp | |||
UseBlockZeroing | OpenJDK6 | bool | sparc | false | product | Use special cpu instructions for block zeroing | src/cpu/sparc/vm/globals_sparc.hpp | |||
UseBoundThreads | OpenJDK6 | bool | runtime | true | product | Bind user level threads to kernel threads (for Solaris only) | src/share/vm/runtime/globals.hpp | |||
UseBsdPosixThreadCPUClocks | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | bsd | true | product | enable fast Bsd Posix clocks where available | src/os/bsd/vm/globals_bsd.hpp | ||
UseC1Optimizations | OpenJDK6 | bool | c1 | true | develop | Turn on C1 optimizations | src/share/vm/c1/c1_globals.hpp | |||
UseCASForSwap | OpenJDK6 | bool | sparc | false | develop | Do not use swap instructions, but only CAS (in a loop) on SPARC | src/cpu/sparc/vm/globals_sparc.hpp | |||
UseCBCond | OpenJDK6 | bool | sparc | false | product | Use compare and branch instruction on SPARC | src/cpu/sparc/vm/globals_sparc.hpp | |||
UseCGroupMemoryLimitForHeap | OpenJDK7 | Deprecated in JDK10 Expired in JDK11 | bool | runtime | false | experimental | Use CGroup memory limit as physical memory limit for heap sizing | src/share/vm/runtime/globals.hpp | ||
UseCHA | OpenJDK6 | bool | runtime | true | develop | Enable CHA | src/share/vm/runtime/globals.hpp | |||
UseCISCSpill | OpenJDK6 | bool | c2 | develop_pd | Use ADLC supplied cisc instructions during allocation | src/share/vm/opto/c2_globals.hpp | ||||
UseCISCSpill | OpenJDK6 | bool | ppc | c2 | false | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
UseCISCSpill | OpenJDK6 | bool | sparc | c2 | false | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
UseCISCSpill | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
UseCLMUL | OpenJDK8 | bool | x86 | false | product | Control whether CLMUL instructions can be used on x86/x64 | src/cpu/x86/vm/globals_x86.hpp | |||
UseCMSAdaptiveFreeLists | OpenJDK6 | bool | runtime | true | develop | Use adaptive free lists in the CMS generation | src/share/vm/runtime/globals.hpp | |||
UseCMSBestFit | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | true | product | Use CMS best fit allocation strategy | src/share/vm/runtime/globals.hpp | ||
UseCMSCollectionPassing | OpenJDK6 | bool | runtime | true | product | Use passing of collection from background to foreground | src/share/vm/runtime/globals.hpp | |||
UseCMSCompactAtFullCollection | OpenJDK6 | bool | runtime | true | product | Use Mark-Sweep-Compact algorithm at full collections | src/share/vm/runtime/globals.hpp | |||
UseCMSInitiatingOccupancyOnly | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Only use occupancy as a criterion for starting a CMS collection | src/share/vm/runtime/globals.hpp | ||
UseCRC32Intrinsics | OpenJDK8 | bool | runtime | false | product | use intrinsics for java.util.zip.CRC32 | src/share/vm/runtime/globals.hpp | |||
UseCodeCacheFlushing | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: true | product | Remove cold/old nmethods from the code cache | src/share/vm/runtime/globals.hpp | |||
UseCompilerSafepoints | OpenJDK6 | bool | runtime | true | product | Stop at safepoints in compiled code | src/share/vm/runtime/globals.hpp | |||
UseCompiler | OpenJDK6 | bool | runtime | true | product | Use Just-In-Time compilation | src/share/vm/runtime/globals.hpp | |||
UseCompressedClassPointers | OpenJDK8 | bool | runtime | false | lp64_product | Use 32-bit class pointers in 64-bit VM. lp64_product means flag is always constant in 32 bit VM | src/share/vm/runtime/globals.hpp | |||
UseCompressedOops | OpenJDK6 | bool | runtime | false | lp64_product | Use 32-bit object references in 64-bit VM. lp64_product means flag is always constant in 32 bit VM | src/share/vm/runtime/globals.hpp | |||
UseConcMarkSweepGC | OpenJDK6 | Obsoleted in JDK14 Expired in JDK15 | bool | runtime | false | product | Use Concurrent Mark-Sweep GC in the old generation | src/share/vm/runtime/globals.hpp | ||
UseCondCardMark | OpenJDK6 | bool | c2 | false | product | Check for already marked card before updating card table | src/share/vm/opto/c2_globals.hpp | |||
UseCountLeadingZerosInstruction | OpenJDK6 | bool | x86 | false | product | Use count leading zeros instruction | src/cpu/x86/vm/globals_x86.hpp | |||
UseCountLeadingZerosInstructionsPPC64 | OpenJDK7 | bool | ppc | true | product | Use count leading zeros instructions. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UseCountTrailingZerosInstruction | OpenJDK8 | bool | x86 | false | product | Use count trailing zeros instruction | src/cpu/x86/vm/globals_x86.hpp | |||
UseCountedLoopSafepoints | OpenJDK7 | bool | c2 | false | product | Force counted loops to keep a safepoint | src/share/vm/opto/c2_globals.hpp | |||
UseCounterDecay | OpenJDK6 | Obsoleted in JDK22 Expired in JDK23 | bool | runtime | true | product | Adjust recompilation counters | src/share/vm/runtime/globals.hpp | ||
UseCriticalCMSThreadPriority | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | experimental | ConcurrentMarkSweep thread runs at critical scheduling priority | src/share/vm/runtime/globals.hpp | |||
UseCriticalCompilerThreadPriority | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | experimental | Compiler thread(s) run at critical scheduling priority | src/share/vm/runtime/globals.hpp | |||
UseCriticalJavaThreadPriority | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | experimental | Java thread priority 10 maps to critical scheduling priority | src/share/vm/runtime/globals.hpp | |||
UseDetachedThreads | OpenJDK6 | bool | runtime | true | develop | Use detached threads that are recycled upon termination (for Solaris only) | src/share/vm/runtime/globals.hpp | |||
UseDivMod | OpenJDK6 | bool | c2 | true | product | Use combined DivMod instruction if available | src/share/vm/opto/c2_globals.hpp | |||
UseDynamicNumberOfGCThreads | OpenJDK6 | bool | runtime | false | product | Dynamically choose the number of parallel threads parallel gc will use | src/share/vm/runtime/globals.hpp | |||
UseExactTypes | OpenJDK6 | bool | c2 | true | develop | Use exact types to eliminate array store checks and v-calls | src/share/vm/opto/c2_globals.hpp | |||
UseExtendedFileIO | OpenJDK6 | bool | solaris | true | product | Enable workaround for limitations of stdio FILE structure | src/os/solaris/vm/globals_solaris.hpp | |||
UseExtendedLoadAndReserveInstructionsPPC64 | OpenJDK7 | bool | ppc | false | product | Use extended versions of load-and-reserve instructions. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UseFPUForSpilling | OpenJDK6 | bool | c2 | false | product | Spill integer registers to FPU instead of stack when possible | src/share/vm/opto/c2_globals.hpp | |||
UseFakeTimers | OpenJDK6 | bool | runtime | false | develop | Tell whether the VM should use system time or a fake timer | src/share/vm/runtime/globals.hpp | |||
UseFastAccessorMethods | OpenJDK6 | bool | runtime | true | product | Use fast method entry code for accessor methods | src/share/vm/runtime/globals.hpp | |||
UseFastEmptyMethods | OpenJDK6 | bool | runtime | true | product | Use fast method entry code for empty methods | src/share/vm/runtime/globals.hpp | |||
UseFastJNIAccessors | OpenJDK6 | bool | runtime | true | product | Use optimized versions of Get | src/share/vm/runtime/globals.hpp | |||
UseFastLocking | OpenJDK6 | bool | c1 | true | develop | Use fast inlined locking code | src/share/vm/c1/c1_globals.hpp | |||
UseFastNewInstance | OpenJDK6 | bool | c1 | true | develop | Use fast inlined instance allocation | src/share/vm/c1/c1_globals.hpp | |||
UseFastNewObjectArray | OpenJDK6 | bool | c1 | true | develop | Use fast inlined object array allocation | src/share/vm/c1/c1_globals.hpp | |||
UseFastNewTypeArray | OpenJDK6 | bool | c1 | true | develop | Use fast inlined type array allocation | src/share/vm/c1/c1_globals.hpp | |||
UseFastSignatureHandlers | OpenJDK6 | bool | runtime | true | develop | Use fast signature handlers for native calls | src/share/vm/runtime/globals.hpp | |||
UseFastStosb | OpenJDK7 | bool | x86 | false | product | Use fast-string operation for zeroing: rep stosb | src/cpu/x86/vm/globals_x86.hpp | |||
UseG1GC | OpenJDK6 | bool | runtime | false | product | Use the Garbage-First garbage collector | src/share/vm/runtime/globals.hpp | |||
UseGCLogFileRotation | OpenJDK6 | bool | runtime | false | product | Rotate gclog files (for long running applications). It requires -Xloggc: | src/share/vm/runtime/globals.hpp | |||
UseGCOverheadLimit | OpenJDK6 | bool | runtime | true | product | Use policy to limit of proportion of time spent in GC before an OutOfMemory error is thrown | src/share/vm/runtime/globals.hpp | |||
UseGCTaskAffinity | OpenJDK6 | Obsoleted in JDK14 Expired in JDK16 | bool | runtime | false | product | Use worker affinity when asking for GCTasks | src/share/vm/runtime/globals.hpp | ||
UseGlobalValueNumbering | OpenJDK6 | bool | c1 | true | develop | Use Global Value Numbering (separate phase) | src/share/vm/c1/c1_globals.hpp | |||
UseHeavyMonitors | OpenJDK6 | Deprecated in JDK18 Obsoleted in JDK19 Expired in JDK20 | bool | runtime | false | product | use heavyweight instead of lightweight Java monitors | src/share/vm/runtime/globals.hpp | ||
UseHugeTLBFS | OpenJDK6 | Obsoleted in JDK22 Expired in JDK23 | bool | bsd | false | product | Use MAP_HUGETLB for large pages | src/os/bsd/vm/globals_bsd.hpp | ||
UseHugeTLBFS | OpenJDK6 | Obsoleted in JDK22 Expired in JDK23 | bool | linux | false | product | Use MAP_HUGETLB for large pages | src/os/linux/vm/globals_linux.hpp | ||
UseImplicitStableValues | OpenJDK8 | Obsoleted in JDK13 Expired in JDK14 | bool | c2 | true | diagnostic | Mark well-known stable fields as such (e.g. String.value) | src/share/vm/opto/c2_globals.hpp | ||
UseIncDec | OpenJDK6 | bool | x86 | true | diagnostic | Use INC, DEC instructions on x86 | src/cpu/x86/vm/globals_x86.hpp | |||
UseInlineCaches | OpenJDK6 | bool | runtime | true | product | Use Inline Caches for virtual calls | src/share/vm/runtime/globals.hpp | |||
UseInlineDepthForSpeculativeTypes | OpenJDK8 | bool | c2 | true | diagnostic | Carry inline depth of profile point with speculative type and give priority to profiling from lower inline depth | src/share/vm/opto/c2_globals.hpp | |||
UseInterpreter | OpenJDK6 | bool | runtime | true | product | Use interpreter for non-compiled methods | src/share/vm/runtime/globals.hpp | |||
UseJumpTables | OpenJDK6 | bool | c2 | true | product | Use JumpTables instead of a binary search tree for switches | src/share/vm/opto/c2_globals.hpp | |||
UseLWPSynchronization | OpenJDK6 | Obsoleted in JDK15 Expired in JDK16 | bool | runtime | true | product | Use LWP-based instead of libthread-based synchronization (SPARC only) | src/share/vm/runtime/globals.hpp | ||
UseLargePagesInMetaspace | OpenJDK8 | Deprecated in JDK15 Obsoleted in JDK16 Expired in JDK17 | bool | runtime | false | product | Use large page memory in metaspace. Only used if UseLargePages is enabled. | src/share/vm/runtime/globals.hpp | ||
UseLargePagesIndividualAllocation | OpenJDK6 | bool | aix | false | define_pd_global | src/os/aix/vm/globals_aix.hpp | ||||
UseLargePagesIndividualAllocation | OpenJDK6 | bool | bsd | false | define_pd_global | src/os/bsd/vm/globals_bsd.hpp | ||||
UseLargePagesIndividualAllocation | OpenJDK6 | bool | linux | false | define_pd_global | src/os/linux/vm/globals_linux.hpp | ||||
UseLargePagesIndividualAllocation | OpenJDK6 | bool | runtime | product_pd | Allocate large pages individually for better affinity | src/share/vm/runtime/globals.hpp | ||||
UseLargePagesIndividualAllocation | OpenJDK6 | bool | solaris | false | define_pd_global | src/os/solaris/vm/globals_solaris.hpp | ||||
UseLargePagesIndividualAllocation | OpenJDK6 | bool | windows | true | define_pd_global | src/os/windows/vm/globals_windows.hpp | ||||
UseLargePages | OpenJDK6 | bool | aix | true | define_pd_global | src/os/aix/vm/globals_aix.hpp | ||||
UseLargePages | OpenJDK6 | bool | bsd | false | define_pd_global | src/os/bsd/vm/globals_bsd.hpp | ||||
UseLargePages | OpenJDK6 | bool | linux | false | define_pd_global | src/os/linux/vm/globals_linux.hpp | ||||
UseLargePages | OpenJDK6 | bool | runtime | product_pd | Use large page memory | src/share/vm/runtime/globals.hpp | ||||
UseLargePages | OpenJDK6 | bool | solaris | true | define_pd_global | src/os/solaris/vm/globals_solaris.hpp | ||||
UseLargePages | OpenJDK6 | bool | windows | false | define_pd_global | src/os/windows/vm/globals_windows.hpp | ||||
UseLinuxPosixThreadCPUClocks | OpenJDK6 | bool | linux | true | product | enable fast Linux Posix clocks where available | src/os/linux/vm/globals_linux.hpp | |||
UseLoadInstructionsForStackBangingPPC64 | OpenJDK7 | bool | ppc | false | product | Use load instructions for stack banging. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UseLocalValueNumbering | OpenJDK6 | bool | c1 | true | develop | Use Local Value Numbering (embedded in GraphBuilder) | src/share/vm/c1/c1_globals.hpp | |||
UseLockedTracing | OpenJDK7 | Obsoleted in JDK11 Expired in JDK12 | bool | runtime | EMBEDDED_ONLY: false | product | Use locked-tracing when doing event-based tracing | src/share/vm/runtime/globals.hpp | ||
UseLoopCounter | OpenJDK6 | bool | runtime | true | product | Increment invocation counter on backward branch | src/share/vm/runtime/globals.hpp | |||
UseLoopInvariantCodeMotion | OpenJDK8 | bool | c1 | true | product | Simple loop invariant code motion for short loops during GVN | src/share/vm/c1/c1_globals.hpp | |||
UseLoopPredicate | OpenJDK6 | bool | c2 | true | product | Generate a predicate to select fast/slow loop versions | src/share/vm/opto/c2_globals.hpp | |||
UseLoopSafepoints | OpenJDK6 | bool | runtime | true | develop | Generate Safepoint nodes in every loop | src/share/vm/runtime/globals.hpp | |||
UseMallocOnly | OpenJDK6 | bool | runtime | false | develop | Use only malloc/free for allocation (no resource area/arena) | src/share/vm/runtime/globals.hpp | |||
UseMathExactIntrinsics | OpenJDK8 | bool | c2 | true | product | Enables intrinsification of various java.lang.Math functions | src/share/vm/opto/c2_globals.hpp | |||
UseMaximumCompactionOnSystemGC | OpenJDK6 | bool | runtime | true | product | Use maximum compaction in the Parallel Old garbage collector for a system GC | src/share/vm/runtime/globals.hpp | |||
UseMemSetInBOT | OpenJDK6 | bool | runtime | true | experimental | (Unstable) uses memset in BOT updates in GC code | src/share/vm/runtime/globals.hpp | |||
UseMembar | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK12 | bool | runtime | product_pd | (Unstable) Issues membars on thread state transitions | src/share/vm/runtime/globals.hpp | |||
UseMembar | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK12 | bool | ppc | false | define_pd_global | src/cpu/ppc/vm/globals_ppc.hpp | |||
UseMembar | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK12 | bool | sparc | false | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | |||
UseMembar | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK12 | bool | x86 | false | define_pd_global | src/cpu/x86/vm/globals_x86.hpp | |||
UseMembar | OpenJDK6 | Deprecated in JDK10 Obsoleted in JDK12 | bool | zero | true | define_pd_global | src/cpu/zero/vm/globals_zero.hpp | |||
UseMontgomeryMultiplyIntrinsic | OpenJDK8 | bool | c2 | false | product | Enables intrinsification of BigInteger.montgomeryMultiply() | src/share/vm/opto/c2_globals.hpp | |||
UseMontgomerySquareIntrinsic | OpenJDK8 | bool | c2 | false | product | Enables intrinsification of BigInteger.montgomerySquare() | src/share/vm/opto/c2_globals.hpp | |||
UseMulAddIntrinsic | OpenJDK8 | bool | c2 | false | product | Enables intrinsification of BigInteger.mulAdd() | src/share/vm/opto/c2_globals.hpp | |||
UseMultiplyToLenIntrinsic | OpenJDK8 | bool | c2 | false | product | Enables intrinsification of BigInteger.multiplyToLen() | src/share/vm/opto/c2_globals.hpp | |||
UseNUMAInterleaving | OpenJDK6 | bool | runtime | false | product | Interleave memory across NUMA nodes if available | src/share/vm/runtime/globals.hpp | |||
UseNUMA | OpenJDK6 | bool | runtime | false | product | Use NUMA if available | src/share/vm/runtime/globals.hpp | |||
UseNewCode2 | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Testing Only: Use the new version while testing | src/share/vm/runtime/globals.hpp | |||
UseNewCode3 | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Testing Only: Use the new version while testing | src/share/vm/runtime/globals.hpp | |||
UseNewCode | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Testing Only: Use the new version while testing | src/share/vm/runtime/globals.hpp | |||
UseNewLongLShift | OpenJDK6 | bool | x86 | false | product | Use optimized bitwise shift left | src/cpu/x86/vm/globals_x86.hpp | |||
UseNewReflection | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: true | develop | Temporary flag for transition to reflection based on dynamic bytecode generation in 1.4; can no longer be turned off in 1.4 JDK, and is unneeded in 1.3 JDK, but marks most places VM changes were needed | src/share/vm/runtime/globals.hpp | |||
UseNiagaraInstrs | OpenJDK6 | bool | sparc | false | product | Use Niagara-efficient instruction subset | src/cpu/sparc/vm/globals_sparc.hpp | |||
UseOSErrorReporting | OpenJDK6 | bool | aix | false | define_pd_global | src/os/aix/vm/globals_aix.hpp | ||||
UseOSErrorReporting | OpenJDK6 | bool | bsd | false | define_pd_global | src/os/bsd/vm/globals_bsd.hpp | ||||
UseOSErrorReporting | OpenJDK6 | bool | linux | false | define_pd_global | src/os/linux/vm/globals_linux.hpp | ||||
UseOSErrorReporting | OpenJDK6 | bool | runtime | product_pd | Let VM fatal error propagate to the OS (ie. WER on Windows) | src/share/vm/runtime/globals.hpp | ||||
UseOSErrorReporting | OpenJDK6 | bool | solaris | false | define_pd_global | src/os/solaris/vm/globals_solaris.hpp | ||||
UseOSErrorReporting | OpenJDK6 | bool | windows | false | define_pd_global | // for now. | src/os/windows/vm/globals_windows.hpp | |||
UseOldInlining | OpenJDK6 | bool | c2 | true | product | Enable the 1.3 inlining strategy | src/share/vm/opto/c2_globals.hpp | |||
UseOnStackReplacement | OpenJDK6 | bool | runtime | product_pd | Use on stack replacement, calls runtime if invoc. counter overflows in loop | src/share/vm/runtime/globals.hpp | ||||
UseOnStackReplacement | OpenJDK6 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
UseOnStackReplacement | OpenJDK6 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
UseOnStackReplacement | OpenJDK6 | bool | sparc | c2 | true | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
UseOnStackReplacement | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
UseOnStackReplacement | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
UseOnStackReplacement | OpenJDK6 | bool | zero | shark | true | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
UseOnlyInlinedBimorphic | OpenJDK6 | bool | c2 | true | product | Don't use BimorphicInlining if can't inline a second method | src/share/vm/opto/c2_globals.hpp | |||
UseOprofile | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | bsd | false | product | enable support for Oprofile profiler | src/os/bsd/vm/globals_bsd.hpp | ||
UseOprofile | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | linux | false | product | enable support for Oprofile profiler | src/os/linux/vm/globals_linux.hpp | ||
UseOptoBiasInlining | OpenJDK6 | Deprecated in JDK15 Obsoleted in JDK18 Expired in JDK19 | bool | c2 | true | product | Generate biased locking code in C2 ideal graph | src/share/vm/opto/c2_globals.hpp | ||
UsePSAdaptiveSurvivorSizePolicy | OpenJDK6 | bool | runtime | true | product | Use adaptive survivor sizing policies | src/share/vm/runtime/globals.hpp | |||
UseParNewGC | OpenJDK6 | bool | runtime | false | product | Use parallel threads in the new generation | src/share/vm/runtime/globals.hpp | |||
UseParallelGC | OpenJDK6 | bool | runtime | false | product | Use the Parallel Scavenge garbage collector | src/share/vm/runtime/globals.hpp | |||
UseParallelOldGC | OpenJDK6 | Deprecated in JDK14 Obsoleted in JDK15 Expired in JDK16 | bool | runtime | false | product | Use the Parallel Old garbage collector | src/share/vm/runtime/globals.hpp | ||
UsePerfData | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: falseInEmbedded | product | Flag to disable jvmstat instrumentation for performance testing and problem isolation purposes | src/share/vm/runtime/globals.hpp | |||
UsePopCountInstruction | OpenJDK6 | bool | runtime | false | product | Use population count instruction | src/share/vm/runtime/globals.hpp | |||
UsePower6SchedulerPPC64 | OpenJDK7 | bool | ppc | false | product | Use Power6 Scheduler. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UsePrivilegedStack | OpenJDK6 | bool | runtime | true | develop | Enable the security JVM functions | src/share/vm/runtime/globals.hpp | |||
UsePthreads | OpenJDK6 | bool | runtime | false | develop | Use pthread-based instead of libthread-based synchronization (SPARC only) | src/share/vm/runtime/globals.hpp | |||
UseRDPCForConstantTableBase | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | c2 | false | product | Use Sparc RDPC instruction for the constant table base. | src/share/vm/opto/c2_globals.hpp | ||
UseRTMDeopt | OpenJDK8 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | x86 | false | product | Perform deopt and recompilation based on RTM abort ratio | src/cpu/x86/vm/globals_x86.hpp | ||
UseRTMForStackLocks | OpenJDK8 | bool | x86 | false | experimental | Enable RTM lock eliding for stack locks in compiled code | src/cpu/x86/vm/globals_x86.hpp | |||
UseRTMLocking | OpenJDK8 | Deprecated in JDK23 Obsoleted in JDK24 Expired in JDK25 | bool | x86 | false | product | Enable RTM lock eliding for inflated locks in compiled code | src/cpu/x86/vm/globals_x86.hpp | ||
UseRTMXendForLockBusy | OpenJDK8 | bool | x86 | true | experimental | Use RTM Xend instead of Xabort when lock busy | src/cpu/x86/vm/globals_x86.hpp | |||
UseRelocIndex | OpenJDK6 | bool | runtime | false | develop | Use an index to speed random access to relocations | src/share/vm/runtime/globals.hpp | |||
UseRotateAndMaskInstructionsPPC64 | OpenJDK7 | bool | ppc | true | product | Use rotate and mask instructions. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UseSHA1Intrinsics | OpenJDK8 | bool | runtime | false | product | Use intrinsics for SHA-1 crypto hash function | src/share/vm/runtime/globals.hpp | |||
UseSHA256Intrinsics | OpenJDK8 | bool | runtime | false | product | Use intrinsics for SHA-224 and SHA-256 crypto hash functions | src/share/vm/runtime/globals.hpp | |||
UseSHA512Intrinsics | OpenJDK8 | bool | runtime | false | product | Use intrinsics for SHA-384 and SHA-512 crypto hash functions | src/share/vm/runtime/globals.hpp | |||
UseSHA | OpenJDK8 | bool | runtime | false | product | Control whether SHA instructions can be used on SPARC | src/share/vm/runtime/globals.hpp | |||
UseSHM | OpenJDK6 | Obsoleted in JDK22 Expired in JDK23 | bool | bsd | false | product | Use SYSV shared memory for large pages | src/os/bsd/vm/globals_bsd.hpp | ||
UseSHM | OpenJDK6 | Obsoleted in JDK22 Expired in JDK23 | bool | linux | false | product | Use SYSV shared memory for large pages | src/os/linux/vm/globals_linux.hpp | ||
UseSIGTRAP | OpenJDK7 | bool | ppc | true | product | Allow trap instructions that make use of SIGTRAP. Use this to switch off all optimizations requiring SIGTRAP. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UseSSE42Intrinsics | OpenJDK6 | bool | runtime | false | product | SSE4.2 versions of intrinsics | src/share/vm/runtime/globals.hpp | |||
UseSSE | OpenJDK6 | Obsoleted in JDK15 Expired in JDK16 | intx | runtime | 99 | product | Highest supported SSE instructions set on x86/x64 | src/share/vm/runtime/globals.hpp | ||
UseSerialGC | OpenJDK6 | bool | runtime | false | product | Use the Serial garbage collector | src/share/vm/runtime/globals.hpp | |||
UseSharedSpaces | OpenJDK6 | Deprecated in JDK18 Obsoleted in JDK19 | bool | runtime | EMBEDDED_ONLY: true | product | Use shared spaces for metadata | src/share/vm/runtime/globals.hpp | ||
UseSignalChaining | OpenJDK6 | bool | runtime | true | product | Use signal-chaining to invoke signal handlers installed by the application (Solaris & Linux only) | src/share/vm/runtime/globals.hpp | |||
UseSlowPath | OpenJDK6 | bool | c1 | false | develop | For debugging: test slow cases by always using them | src/share/vm/c1/c1_globals.hpp | |||
UseSquareToLenIntrinsic | OpenJDK8 | bool | c2 | false | product | Enables intrinsification of BigInteger.squareToLen() | src/share/vm/opto/c2_globals.hpp | |||
UseStackBanging | OpenJDK6 | bool | runtime | true | develop | use stack banging for stack overflow checks (required for proper StackOverflow handling; disable only to measure cost of stackbanging) | src/share/vm/runtime/globals.hpp | |||
UseStaticBranchPredictionForUncommonPathsPPC64 | OpenJDK7 | bool | ppc | false | product | Use static branch prediction hints for uncommon paths. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UseStaticBranchPredictionInCompareAndSwapPPC64 | OpenJDK7 | bool | ppc | true | product | Use static branch prediction hints in CAS operations. | src/cpu/ppc/vm/globals_ppc.hpp | |||
UseStoreImmI16 | OpenJDK6 | bool | x86 | true | product | Use store immediate 16-bits value instruction on x86 | src/cpu/x86/vm/globals_x86.hpp | |||
UseStrictFP | OpenJDK6 | bool | runtime | true | develop | use strict fp if modifier strictfp is set | src/share/vm/runtime/globals.hpp | |||
UseStringDeduplication | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | product | Use string deduplication | src/share/vm/runtime/globals.hpp | |||
UseSuperWord | OpenJDK6 | bool | c2 | true | product | Transform scalar operations into superword operations | src/share/vm/opto/c2_globals.hpp | |||
UseTLAB | OpenJDK6 | bool | runtime | product_pd | Use thread-local object allocation | src/share/vm/runtime/globals.hpp | ||||
UseTLAB | OpenJDK6 | bool | ppc | c2 | true | define_pd_global | src/cpu/ppc/vm/c2_globals_ppc.hpp | |||
UseTLAB | OpenJDK6 | bool | sparc | c1 | true | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
UseTLAB | OpenJDK6 | bool | sparc | c2 | true | define_pd_global | src/cpu/sparc/vm/c2_globals_sparc.hpp | |||
UseTLAB | OpenJDK6 | bool | x86 | c1 | true | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
UseTLAB | OpenJDK6 | bool | x86 | c2 | true | define_pd_global | src/cpu/x86/vm/c2_globals_x86.hpp | |||
UseTLAB | OpenJDK6 | bool | zero | shark | true | define_pd_global | src/cpu/zero/vm/shark_globals_zero.hpp | |||
UseTableRanges | OpenJDK6 | bool | c1 | true | develop | Faster versions of lookup table using ranges | src/share/vm/c1/c1_globals.hpp | |||
UseThreadPriorities | OpenJDK6 | bool | runtime | product_pd | Use native thread priorities | src/share/vm/runtime/globals.hpp | ||||
UseThreadPriorities | OpenJDK6 | bool | solaris | false | define_pd_global | src/os/solaris/vm/globals_solaris.hpp | ||||
UseTransparentHugePages | OpenJDK7 | bool | linux | false | product | Use MADV_HUGEPAGE for large pages | src/os/linux/vm/globals_linux.hpp | |||
UseTypeProfile | OpenJDK6 | bool | runtime | true | product | Check interpreter profile for historically monomorphic calls | src/share/vm/runtime/globals.hpp | |||
UseTypeProfile | OpenJDK6 | bool | sparc | c1 | false | define_pd_global | src/cpu/sparc/vm/c1_globals_sparc.hpp | |||
UseTypeProfile | OpenJDK6 | bool | x86 | c1 | false | define_pd_global | src/cpu/x86/vm/c1_globals_x86.hpp | |||
UseTypeSpeculation | OpenJDK8 | bool | c2 | true | product | Speculatively propagate types from profiles | src/share/vm/opto/c2_globals.hpp | |||
UseUTCFileTimestamp | OpenJDK6 | Obsoleted in JDK11 Expired in JDK12 | bool | windows | true | product | Adjust the timestamp returned from stat() to be UTC | src/os/windows/vm/globals_windows.hpp | ||
UseUnalignedLoadStores | OpenJDK6 | bool | x86 | false | product | Use SSE2 MOVDQU instruction for Arraycopy | src/cpu/x86/vm/globals_x86.hpp | |||
UseUniqueSubclasses | OpenJDK6 | bool | c2 | true | develop | Narrow an abstract reference to the unique concrete subclass | src/share/vm/opto/c2_globals.hpp | |||
UseV8InstrsOnly | OpenJDK6 | bool | sparc | false | develop | Use SPARC-V8 Compliant instruction subset | src/cpu/sparc/vm/globals_sparc.hpp | |||
UseVIS | OpenJDK6 | intx | sparc | 99 | product | Highest supported VIS instructions set on Sparc | src/cpu/sparc/vm/globals_sparc.hpp | |||
UseVMInterruptibleIO | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | product | (Unstable, Solaris-specific) Thread interrupt before or with EINTR for I/O operations results in OS_INTRPT. The default value of this flag is true for JDK 6 and earlier | src/share/vm/runtime/globals.hpp | |||
UseVectoredExceptions | OpenJDK6 | bool | aix | ppc | false | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | |||
UseVectoredExceptions | OpenJDK6 | bool | linux | ppc | false | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | |||
UseXMMForArrayCopy | OpenJDK6 | bool | runtime | false | product | Use SSE2 MOVQ instruction for Arraycopy | src/share/vm/runtime/globals.hpp | |||
UseXmmI2D | OpenJDK6 | bool | x86 | false | product | Use SSE2 CVTDQ2PD instruction to convert Integer to Double | src/cpu/x86/vm/globals_x86.hpp | |||
UseXmmI2F | OpenJDK6 | bool | x86 | false | product | Use SSE2 CVTDQ2PS instruction to convert Integer to Float | src/cpu/x86/vm/globals_x86.hpp | |||
UseXmmLoadAndClearUpper | OpenJDK6 | bool | x86 | true | product | Load low part of XMM register and clear upper part | src/cpu/x86/vm/globals_x86.hpp | |||
UseXmmRegToRegMoveAll | OpenJDK6 | bool | x86 | false | product | Copy all XMM register bits when moving value between registers | src/cpu/x86/vm/globals_x86.hpp | |||
VMThreadHintNoPreempt | OpenJDK6 | Deprecated in JDK11 Obsoleted in JDK12 Expired in JDK13 | bool | runtime | EMBEDDED_ONLY: false | product | (Solaris only) Give VM thread an extra quanta | src/share/vm/runtime/globals.hpp | ||
VMThreadPriority | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: -1 | product | The native priority at which the VM thread should run (-1 means no change) | src/share/vm/runtime/globals.hpp | |||
VMThreadStackSize | OpenJDK6 | intx | aix | ppc | 2048 | define_pd_global | src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp | |||
VMThreadStackSize | OpenJDK6 | intx | bsd | x86 | 512 | define_pd_global | src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp | |||
VMThreadStackSize | OpenJDK6 | intx | bsd | zero | 512 | define_pd_global | src/os_cpu/bsd_zero/vm/globals_bsd_zero.hpp | |||
VMThreadStackSize | OpenJDK6 | intx | linux | ppc | 2048 | define_pd_global | src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp | |||
VMThreadStackSize | OpenJDK6 | intx | linux | x86 | 512 | define_pd_global | src/os_cpu/linux_x86/vm/globals_linux_x86.hpp | |||
VMThreadStackSize | OpenJDK6 | intx | linux | zero | 512 | define_pd_global | src/os_cpu/linux_zero/vm/globals_linux_zero.hpp | |||
VMThreadStackSize | OpenJDK6 | intx | runtime | product_pd | Non-Java Thread Stack Size (in Kbytes) | src/share/vm/runtime/globals.hpp | ||||
VMThreadStackSize | OpenJDK6 | intx | sparc | 512 | define_pd_global | src/cpu/sparc/vm/globals_sparc.hpp | ||||
VMThreadStackSize | OpenJDK6 | intx | solaris | x86 | 512 | define_pd_global | src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp | |||
VMThreadStackSize | OpenJDK6 | intx | windows | x86 | 0 | define_pd_global | // 0 => use system default | src/os_cpu/windows_x86/vm/globals_windows_x86.hpp | ||
ValueMapInitialSize | OpenJDK6 | intx | c1 | 11 | product | Initial size of a value map | src/share/vm/c1/c1_globals.hpp | |||
ValueMapMaxLoopSize | OpenJDK6 | intx | c1 | 8 | product | maximum size of a loop optimized by global value numbering | src/share/vm/c1/c1_globals.hpp | |||
ValueSearchLimit | OpenJDK6 | intx | c2 | 1000 | product | Recursion limit in PhaseMacroExpand::value_from_mem_phi | src/share/vm/opto/c2_globals.hpp | |||
VerboseInternalVMTests | OpenJDK7 | bool | runtime | false | notproduct | Turn on logging for internal VM tests. | src/share/vm/runtime/globals.hpp | |||
VerboseVerification | OpenJDK6 | bool | runtime | false | diagnostic | Display detailed verification details | src/share/vm/runtime/globals.hpp | |||
Verbose | OpenJDK6 | bool | runtime | false | develop | Print additional debugging information from other modes | src/share/vm/runtime/globals.hpp | |||
VerifyActivationFrameSize | OpenJDK6 | bool | runtime | false | develop | Verify that activation frame didn't become smaller than its minimal size | src/share/vm/runtime/globals.hpp | |||
VerifyAdapterCalls | OpenJDK7 | bool | runtime | trueInDebug | diagnostic | Verify that i2c/c2i adapters are called properly | src/share/vm/runtime/globals.hpp | |||
VerifyAdapterSharing | OpenJDK6 | bool | runtime | false | develop | Verify that the code for shared adapters is the equivalent | src/share/vm/runtime/globals.hpp | |||
VerifyAfterGC | OpenJDK6 | bool | runtime | false | diagnostic | Verify memory system after GC | src/share/vm/runtime/globals.hpp | |||
VerifyAliases | OpenJDK6 | bool | c2 | false | develop | perform extra checks on the results of alias analysis | src/share/vm/opto/c2_globals.hpp | |||
VerifyBeforeExit | OpenJDK6 | bool | runtime | trueInDebug | diagnostic | Verify system before exiting | src/share/vm/runtime/globals.hpp | |||
VerifyBeforeGC | OpenJDK6 | bool | runtime | false | diagnostic | Verify memory system before GC | src/share/vm/runtime/globals.hpp | |||
VerifyBeforeIteration | OpenJDK6 | bool | runtime | false | diagnostic | Verify memory system before JVMTI iteration | src/share/vm/runtime/globals.hpp | |||
VerifyBlockOffsetArray | OpenJDK6 | bool | runtime | false | develop | Do (expensive) block offset array verification | src/share/vm/runtime/globals.hpp | |||
VerifyCodeCacheOften | OpenJDK6 | bool | runtime | false | notproduct | Verify compiled-code cache often | src/share/vm/runtime/globals.hpp | |||
VerifyCompiledCode | OpenJDK6 | bool | runtime | false | develop | Include miscellaneous runtime verifications in nmethod code; default off because it disturbs nmethod size heuristics | src/share/vm/runtime/globals.hpp | |||
VerifyConnectionGraph | OpenJDK7 | bool | c2 | true | notproduct | Verify Connection Graph construction in Escape Analysis | src/share/vm/opto/c2_globals.hpp | |||
VerifyDUIterators | OpenJDK6 | bool | c2 | true | notproduct | Verify the safety of all iterations of Bi-directional Edges | src/share/vm/opto/c2_globals.hpp | |||
VerifyDataPointer | OpenJDK6 | bool | runtime | trueInDebug | develop | Verify the method data pointer during interpreter profiling | src/share/vm/runtime/globals.hpp | |||
VerifyDependencies | OpenJDK6 | bool | runtime | trueInDebug | develop | Exercise and verify the compilation dependency mechanism | src/share/vm/runtime/globals.hpp | |||
VerifyDuringGC | OpenJDK6 | bool | runtime | false | diagnostic | Verify memory system during GC (between phases) | src/share/vm/runtime/globals.hpp | |||
VerifyDuringStartup | OpenJDK7 | bool | runtime | false | diagnostic | Verify memory system before executing any Java code during VM initialization | src/share/vm/runtime/globals.hpp | |||
VerifyFPU | OpenJDK6 | bool | runtime | false | develop | Verify FPU state (check for NaN's, etc.) | src/share/vm/runtime/globals.hpp | |||
VerifyGCLevel | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 0 | diagnostic | Generation level at which to start +VerifyBefore/AfterGC | src/share/vm/runtime/globals.hpp | |||
VerifyGCStartAt | OpenJDK6 | uintx | runtime | EMBEDDED_ONLY: 0 | diagnostic | GC invoke count where +VerifyBefore/AfterGC kicks in | src/share/vm/runtime/globals.hpp | |||
VerifyGenericSignatures | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | develop | Abort VM on erroneous or inconsistent generic signatures | src/share/vm/runtime/globals.hpp | |||
VerifyGraphEdges | OpenJDK6 | bool | c2 | false | notproduct | Verify Bi-directional Edges | src/share/vm/opto/c2_globals.hpp | |||
VerifyHashTableKeys | OpenJDK6 | bool | c2 | true | notproduct | Verify the immutability of keys in the VN hash tables | src/share/vm/opto/c2_globals.hpp | |||
VerifyIdealNodeCount | OpenJDK7 | bool | c2 | false | notproduct | Verify that tracked dead ideal node count is accurate | src/share/vm/opto/c2_globals.hpp | |||
VerifyIterativeGVN | OpenJDK6 | bool | c2 | false | develop | Verify Def-Use modifications during sparse Iterative Global Value Numbering | src/share/vm/opto/c2_globals.hpp | |||
VerifyJNIEnvThread | OpenJDK6 | bool | runtime | false | notproduct | Verify JNIEnv.thread == Thread::current() when entering VM from JNI | src/share/vm/runtime/globals.hpp | |||
VerifyJNIFields | OpenJDK6 | bool | runtime | trueInDebug | develop | Verify jfieldIDs for instance fields | src/share/vm/runtime/globals.hpp | |||
VerifyLastFrame | OpenJDK6 | bool | runtime | false | notproduct | Verify oops on last frame on entry to VM | src/share/vm/runtime/globals.hpp | |||
VerifyLoopOptimizations | OpenJDK6 | bool | c2 | false | notproduct | verify major loop optimizations | src/share/vm/opto/c2_globals.hpp | |||
VerifyMergedCPBytecodes | OpenJDK6 | Obsoleted in JDK16 Expired in JDK17 | bool | runtime | true | product | Verify bytecodes after RedefineClasses constant pool merging | src/share/vm/runtime/globals.hpp | ||
VerifyMethodHandles | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: trueInDebug | diagnostic | perform extra checks when constructing method handles | src/share/vm/runtime/globals.hpp | |||
VerifyObjectStartArray | OpenJDK6 | bool | runtime | true | diagnostic | Verify GC object start array if verify before/after | src/share/vm/runtime/globals.hpp | |||
VerifyOops | OpenJDK6 | bool | runtime | false | develop | Do plausibility checks for oops | src/share/vm/runtime/globals.hpp | |||
VerifyOptoOopOffsets | OpenJDK6 | bool | c2 | false | notproduct | Check types of base addresses in field references | src/share/vm/opto/c2_globals.hpp | |||
VerifyOpto | OpenJDK6 | bool | c2 | false | notproduct | Apply more time consuming verification during compilation | src/share/vm/opto/c2_globals.hpp | |||
VerifyReflectionBytecodes | OpenJDK6 | bool | runtime | EMBEDDED_ONLY: false | develop | Force verification of 1.4 reflection bytecodes. Does not work in situations like that described in 4486457 or for constructors generated for serialization, so can not be enabled in product. | src/share/vm/runtime/globals.hpp | |||
VerifyRegisterAllocator | OpenJDK6 | bool | c2 | false | notproduct | Verify Register Allocator | src/share/vm/opto/c2_globals.hpp | |||
VerifyRememberedSets | OpenJDK6 | bool | runtime | false | diagnostic | Verify GC remembered sets | src/share/vm/runtime/globals.hpp | |||
VerifySharedSpaces | OpenJDK8 | bool | runtime | EMBEDDED_ONLY: false | product | Verify shared spaces (false for default archive, true for archive specified by -XX:SharedArchiveFile) | src/share/vm/runtime/globals.hpp | |||
VerifySilently | OpenJDK7 | bool | runtime | false | diagnostic | Do not print the verification progress | src/share/vm/runtime/globals.hpp | |||
VerifyStackAtCalls | OpenJDK6 | bool | runtime | false | develop | Verify that the stack pointer is unchanged after calls | src/share/vm/runtime/globals.hpp | |||
VerifyStack | OpenJDK6 | bool | runtime | false | develop | Verify stack of each thread when it is entering a runtime call | src/share/vm/runtime/globals.hpp | |||
VerifyStringTableAtExit | OpenJDK8 | bool | runtime | false | diagnostic | verify StringTable contents at exit | src/share/vm/runtime/globals.hpp | |||
VerifySubSet | OpenJDK8 | ccstrlist | runtime | diagnostic | Memory sub-systems to verify when Verify*GC flag(s) are enabled. One or more sub-systems can be specified in a comma separated string. Sub-systems are: threads, heap, symbol_table, string_table, codecache, dictionary, classloader_data_graph, metaspace, jni_handles, c-heap, codecache_oops | src/share/vm/runtime/globals.hpp | ||||
VerifyThread | OpenJDK6 | bool | runtime | false | develop | Watch the thread register for corruption (SPARC only) | src/share/vm/runtime/globals.hpp | |||
WalkStackALot | OpenJDK6 | bool | runtime | false | notproduct | Trace stack (no print) at every exit from the runtime system | src/share/vm/runtime/globals.hpp | |||
WarmCallMaxSize | OpenJDK6 | intx | c2 | 999999 | develop | size of the largest inlinable method | src/share/vm/opto/c2_globals.hpp | |||
WarmCallMaxWork | OpenJDK6 | intx | c2 | 999999 | develop | execution time of the largest inlinable method | src/share/vm/opto/c2_globals.hpp | |||
WarmCallMinCount | OpenJDK6 | intx | c2 | -1 | develop | number of calls (per method invocation) to enable inlining | src/share/vm/opto/c2_globals.hpp | |||
WarmCallMinProfit | OpenJDK6 | intx | c2 | -1 | develop | number of calls (per method invocation) to enable inlining | src/share/vm/opto/c2_globals.hpp | |||
WarnOnStalledSpinLock | OpenJDK6 | uintx | runtime | 0 | notproduct | Print warnings for stalled SpinLocks | src/share/vm/runtime/globals.hpp | |||
WhiteBoxAPI | OpenJDK7 | bool | runtime | EMBEDDED_ONLY: false | diagnostic | Enable internal testing APIs | src/share/vm/runtime/globals.hpp | |||
WizardMode | OpenJDK6 | bool | runtime | false | develop | Print much more debugging information | src/share/vm/runtime/globals.hpp | |||
WorkAroundNPTLTimedWaitHang | OpenJDK6 | intx | runtime | 1 | product | (Unstable, Linux-specific) avoid NPTL-FUTEX hang pthread_cond_timedwait | src/share/vm/runtime/globals.hpp | |||
WorkStealingHardSpins | OpenJDK6 | uintx | runtime | 4096 | experimental | Number of iterations in a spin loop between checks on time out of hard spin | src/share/vm/runtime/globals.hpp | |||
WorkStealingSleepMillis | OpenJDK6 | uintx | runtime | 1 | experimental | Sleep time when sleep is used for yields | src/share/vm/runtime/globals.hpp | |||
WorkStealingSpinToYieldRatio | OpenJDK6 | uintx | runtime | 10 | experimental | Ratio of hard spins to calls to yield | src/share/vm/runtime/globals.hpp | |||
WorkStealingYieldsBeforeSleep | OpenJDK6 | uintx | runtime | 5000 | experimental | Number of yields before a sleep is done during workstealing | src/share/vm/runtime/globals.hpp | |||
YoungGenerationSizeIncrement | OpenJDK6 | uintx | runtime | 20 | product | Adaptive size percentage change in young generation | src/share/vm/runtime/globals.hpp | |||
YoungGenerationSizeSupplementDecay | OpenJDK6 | uintx | runtime | 8 | product | Decay factor to YoungedGenerationSizeSupplement | src/share/vm/runtime/globals.hpp | |||
YoungGenerationSizeSupplement | OpenJDK6 | uintx | runtime | 80 | product | Supplement to YoungedGenerationSizeIncrement used at startup | src/share/vm/runtime/globals.hpp | |||
YoungPLABSize | OpenJDK6 | uintx | runtime | 4096 | product | Size of young gen promotion LAB's (in HeapWords) | src/share/vm/runtime/globals.hpp | |||
ZapDeadCompiledLocalsFirst | OpenJDK6 | intx | c2 | 0 | notproduct | If +ZapDeadCompiledLocals, skip this many before really doing it | src/share/vm/opto/c2_globals.hpp | |||
ZapDeadCompiledLocalsLast | OpenJDK6 | intx | c2 | -1 | notproduct | If +ZapDeadCompiledLocals, do this many after skipping (incl. skip count, -1 = all) | src/share/vm/opto/c2_globals.hpp | |||
ZapDeadCompiledLocals | OpenJDK6 | bool | runtime | false | develop | Zap dead locals in compiler frames | src/share/vm/runtime/globals.hpp | |||
ZapDeadLocalsOld | OpenJDK6 | bool | runtime | false | notproduct | Zap dead locals (old version, zaps all frames when entering the VM | src/share/vm/runtime/globals.hpp | |||
ZapFillerObjects | OpenJDK6 | bool | runtime | trueInDebug | develop | Zap filler objects with 0xDEAFBABE | src/share/vm/runtime/globals.hpp | |||
ZapJNIHandleArea | OpenJDK6 | bool | runtime | trueInDebug | develop | Zap freed JNI handle space with 0xFEFEFEFE | src/share/vm/runtime/globals.hpp | |||
ZapMemory | OpenJDK7 | bool | ppc | false | product | Write 0x0101... to empty memory. Use this to ease debugging. | src/cpu/ppc/vm/globals_ppc.hpp | |||
ZapResourceArea | OpenJDK6 | bool | runtime | trueInDebug | develop | Zap freed resource/arena space with 0xABABABAB | src/share/vm/runtime/globals.hpp | |||
ZapStackSegments | OpenJDK6 | bool | runtime | trueInDebug | notproduct | Zap allocated/freed stack segments with 0xFADFADED | src/share/vm/runtime/globals.hpp | |||
ZapUnusedHeapArea | OpenJDK6 | bool | runtime | trueInDebug | develop | Zap unused heap space with 0xBAADBABE | src/share/vm/runtime/globals.hpp | |||
ZapVMHandleArea | OpenJDK6 | bool | runtime | trueInDebug | notproduct | Zap freed VM handle space with 0xBCBCBCBC | src/share/vm/runtime/globals.hpp | |||
ZeroTLAB | OpenJDK6 | bool | runtime | false | product | Zero out the newly created TLAB | src/share/vm/runtime/globals.hpp | |||
ZombieALotInterval | OpenJDK6 | intx | runtime | EMBEDDED_ONLY: 5 | notproduct | Number of exits until ZombieALot kicks in | src/share/vm/runtime/globals.hpp | |||
ZombieALot | OpenJDK6 | bool | runtime | false | notproduct | Create zombies (non-entrant) at exit from the runtime system | src/share/vm/runtime/globals.hpp | |||
batch | OpenJDK6 | disable background compilation | Xusage.txt | |||||||
bootclasspath/a | OpenJDK6 | <dirs/jars> | append to end of bootstrap class path | Xusage.txt | ||||||
bootclasspath/p | OpenJDK6 | <dirs/jars> | prepend in front of bootstrap class path | Xusage.txt | ||||||
bootclasspath | OpenJDK6 | <dirs/jars> | set search path for bootstrap classes and resources | Xusage.txt | ||||||
check:jni | OpenJDK6 | perform additional checks for JNI functions | Xusage.txt | |||||||
future | OpenJDK6 | enable strictest checks, anticipating future default | Xusage.txt | |||||||
hashCode | OpenJDK6 | intx | runtime | 5 | product | (Unstable) select hashCode generation algorithm | src/share/vm/runtime/globals.hpp | |||
incgc | OpenJDK6 | enable incremental garbage collection | Xusage.txt | |||||||
int | OpenJDK6 | interpreted mode execution only | Xusage.txt | |||||||
loggc | OpenJDK6 | <file> | log GC status to a file with time stamps | Xusage.txt | ||||||
mixed | OpenJDK6 | mixed mode execution (default) | Xusage.txt | |||||||
ms | OpenJDK6 | <size> | set initial Java heap size | Xusage.txt | ||||||
mx | OpenJDK6 | <size> | set maximum Java heap size | Xusage.txt | ||||||
noclassgc | OpenJDK6 | disable class garbage collection | Xusage.txt | |||||||
prof | OpenJDK6 | output cpu profiling data | Xusage.txt | |||||||
rs | OpenJDK6 | reduce use of OS signals by Java/VM (see documentation) | Xusage.txt | |||||||
share:auto | OpenJDK6 | use shared class data if possible (default) | Xusage.txt | |||||||
share:off | OpenJDK6 | do not attempt to use shared class data | Xusage.txt | |||||||
share:on | OpenJDK6 | require using shared class data, otherwise fail. The -X options are non-standard and subject to change without notice. | Xusage.txt | |||||||
ss | OpenJDK6 | <size> | set java thread stack size | Xusage.txt |