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FullJEP
JEPMap
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hsdis
JITWatch
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VM Options Explorer
VM Intrinsics Explorer
GC Explorer
Optimizing Java
VM Options Explorer - Switch comparison of OpenJDK8 vs Zulu JDK8
OpenJDK HotSpot
Options added/removed between JDKs
OpenJDK options also hosted on
foojay.io
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Alibaba Dragonwell
8
11
17
Amazon Corretto
8
11
17
19
20
Azul Systems
Platform Prime
Zulu
8
11
13
15
17
19
8
11
13
15
16
17
18
19
20
BellSoft Liberica
8
11
17
18
19
20
Eclipse Temurin
8
11
17
18
19
20
GraalVM 22.3.1
11
17
19
CE
EE
CE
EE
CE
EE
EE-only
EE-only
EE-only
GraalVM native-image 22.3.1
11
17
19
CE
EE
CE
EE
CE
EE
EE-only
EE-only
EE-only
Microsoft
11
16
17
OpenJ9
OpenJ9
Oracle
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
SAP SapMachine
11
17
19
20
Zulu JDK8 changed default values for:
None
Zulu JDK8 added:
AbortVMOnSafepointTimeout
ActiveProcessorCount
AggressiveHeap
FlightRecorder
FlightRecorderOptions
InitialRAMPercentage
LogJFR
MaxRAMPercentage
MinRAMPercentage
OverrideVMProperties
PreferContainerQuotaForCPUCount
PrintContainerInfo
RestrictReservedStack
StackReservedPages
StartFlightRecording
TraceBiasedLockingDateStamp
UnlockCommercialFeatures
UseAESCTRIntrinsics
UseContainerSupport
UseFastUnorderedTimeStamps
UseGHASHIntrinsics
UseLegacy8uJSSE
UseLegacyJNINameEscaping
UseOpenJSSE
Zulu JDK8 removed:
CICompileOSR
CSEArrayLength
CodeCacheMinBlockLength
CodeCacheMinimumUseSpace
CodeEntryAlignment
FLOATPRESSURE
INTPRESSURE
ImplicitNullChecks
InlineFrequencyCount
InlineIntrinsics
OptoPeephole
ProfileTraps
RegisterCostAreaRatio
RoundFPResults
ShareVtableStubs
SharkMaxInlineSize
SharkOptimizationLevel
SharkPerformanceWarnings
SharkPrintAsmOf
SharkPrintBitcodeOf
SharkTraceInstalls
TwoOperandLIRForm
UncommonNullCast
UseCISCSpill
UseOldInlining
