I make tools for understanding the Java Virtual Machine. Please support my work by sponsoring me on GitHub. Thank you!

VM Options Explorer - Switch comparison of OpenJDK6 vs Oracle JDK6

OpenJDK HotSpot
Options added/removed
OpenJDK options also hosted on foojay.io
JDK6 JDK7 JDK8 JDK9 JDK10 JDK11 JDK12 JDK13 JDK14 JDK15 JDK16 JDK17 JDK18
Alibaba
Dragonwell 8 Dragonwell 11
Magnifying glass Magnifying glass
Amazon
Corretto 8 Corretto 11 Corretto 17
Magnifying glass Magnifying glass Magnifying glass
Azul Systems
Zing Zulu
JDK8 JDK11 JDK8 JDK11 JDK13 JDK15 JDK16 JDK17
Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass
BellSoft
Liberica 8 Liberica 11 Liberica 17
Magnifying glass Magnifying glass Magnifying glass
Eclipse
Temurin 8 Temurin 11 Temurin 17
Magnifying glass Magnifying glass Magnifying glass
GraalVM 21.3.0
JDK8 JDK11 JDK17
EE CE EE CE EE
EE-only EE-only
GraalVM native-image 21.3.0
JDK8 JDK11 JDK17
EE CE EE CE EE
EE-only EE-only
Microsoft
Microsoft 11 Microsoft 16 Microsoft 17
Magnifying glass Magnifying glass Magnifying glass
OpenJ9
OpenJ9
Oracle
JDK6 JDK7 JDK8 JDK9 JDK10 JDK11 JDK12 JDK13 JDK14 JDK15 JDK16 JDK17
Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass Magnifying glass
SAP
SapMachine
Magnifying glass

Oracle JDK6 changed default values for:

None

Oracle JDK6 added:

AllowTransitionalJSR292
CMSUseOldDefaults
SpecialStringCompareToCC
SpecialStringCompress
SpecialStringEqualsCC
SpecialStringIndexOfCC
SpecialStringInflate
UseCompressedStrings
UseParallelDensePrefixUpdate
UseParallelOldGCCompacting
UseParallelOldGCDensePrefix

Oracle JDK6 removed:

AllowInvokeGeneric
ArraycopyDstPrefetchDistance
ArraycopySrcPrefetchDistance
BlockCopyLowLimit
BlockZeroingLowLimit
CICompileOSR
CSEArrayLength
CodeCacheMinBlockLength
CodeEntryAlignment
CreateMinidumpOnCrash
CriticalJNINatives
Debugging
EliminateNestedLocks
ErrorReportServer
FLOATPRESSURE
ForceDynamicNumberOfGCThreads
ForceUnreachable
G1ConcMarkStepDurationMillis
G1ConcRSHotCardLimit
G1ConcRSLogCacheSize
G1PrintRegionLivenessInfo
G1RefProcDrainInterval
HeapSizePerGCThread
INTPRESSURE
ImplicitNullChecks
InlineFrequencyCount
InlineIntrinsics
LogEvents
LogEventsBufferEntries
LoopLimitCheck
LowMemoryProtection
NUMAInterleaveGranularity
OptimizePtrCompare
OptoPeephole
ParGCCardsPerStrideChunk
ParGCStridesPerThread
PauseAtExit
PredictedLoadedClassCount
PrintCompilation2
PrintMethodHandleStubs
ProfileTraps
RangeLimitCheck
RegisterCostAreaRatio
RoundFPResults
ShareVtableStubs
SharkMaxInlineSize
SharkPerformanceWarnings
SharkPrintAsmOf
SharkPrintBitcodeOf
SharkTraceInstalls
Tier23InlineeNotifyFreqLog
TraceDynamicGCThreads
TraceGCTaskThread
TransmitErrorReport
TwoOperandLIRForm
UncommonNullCast
UnlinkSymbolsALot
UnrollLimitCheck
UseAVX
UseBlockCopy
UseBlockZeroing
UseCBCond
UseCISCSpill
UseCondCardMark
UseCriticalCMSThreadPriority
UseCriticalCompilerThreadPriority
UseCriticalJavaThreadPriority
UseDynamicNumberOfGCThreads
UseNUMAInterleaving
UseVIS
VerboseVerification
Built on Fri Dec 03 22:56:48 GMT 2021 by @chriswhocodes
All third party trademarks including logos and icons referenced on chriswhocodes.com remain the property of their respective owners.
Use of third party trademarks does not indicate any relationship, sponsorship, or endorsement between chriswhocodes.com and the owners of these trademarks.
Magnifying glass icon from https://commons.wikimedia.org/wiki/File:Magnifying_glass_icon_mgx2.svg