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JVM Flag Deltas for 7,8,9,10,11
Weixing Sun edited this page Feb 21, 2019
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JVM Parameters JDK8 JDK7 intx AllocatePrefetchInstr = 3 0 intx CICompilerCount = 3 2 bool CICompilerCountPerCPU = true false bool CMSClassUnloadingEnabled = true false bool CMSEdenChunksRecordAlways = true false bool CMSParallelInitialMarkEnabled = true false intx CMSTriggerInterval = -1 80 intx CompilationPolicyChoice = 3 0 uintx G1HeapWastePercent = 5 10 intx InlineSmallCode = 2000 1000 intx LiveNodeCountInliningCutoff = 40000 20000 uintx MinHeapDeltaBytes = 524288 196608 intx MinJumpTableSize = 10 18 intx NodeLimitFudgeFactor = 2000 1000 uintx ReservedCodeCacheSize = 251658240 50331648 uintx SharedMiscCodeSize = 122880 4194304 uintx SharedMiscDataSize = 4194304 6291456 uintx SharedReadOnlySize = 16777216 10485760 uintx SharedReadWriteSize = 16777216 14680064 bool TieredCompilation = true false bool UseCountLeadingZerosInstruction = true false bool UseFPUForSpilling = true false intx hashCode = 5 0
JDK9 JDK8 intx CompilerThreadStackSize = 1024 0 uint ConcGCThreads = 1 0 bool CreateCoredumpOnCrash = true false bool FastTLABRefill = false true uint G1ConcRefinementThreads = 4 0 size_t G1ConcRefinementThresholdStep = 2 0 size_t G1HeapRegionSize = 1048576 0 intx G1RSetRegionEntries = 256 0 intx G1RSetSparseRegionEntries = 4 0 uintx GCPauseIntervalMillis = 201 0 uintx GCTimeRatio = 12 99 size_t MarkStackSizeMax = 16777216 536870912 uintx MarkSweepDeadRatio = 5 1 uintx MaxGCPauseMillis = 200 18446744073709551615 uintx MaxHeapFreeRatio = 70 100 size_t MaxNewSize = 1217396736 676331520 intx MaxNodeLimit = 80000 75000 size_t MinHeapDeltaBytes = 1048576 524288 uintx MinHeapFreeRatio = 40 0 bool MonitorInUseLists = true false bool ScavengeBeforeFullGC = false true size_t SharedReadOnlySize = 10485760 16777216 size_t SharedReadWriteSize = 10485760 16777216 bool UseG1GC = true false bool UseParallelGC = false true bool UseParallelOldGC = false true bool UseSHA = true false
JDK10 JDK9 bool AssumeMP = true false intx BiasedLockingStartupDelay = 0 4000 intx MaxVectorSize = 64 32 bool UseCountedLoopSafepoints = true false bool UseMembar = true false
JDK11 JDK10 intx CompilationPolicyChoice = 2 3 bool CompilerThreadHintNoPreempt = false true uint G1RefProcDrainInterval = 1000 10 size_t HeapSizePerGCThread = 43620760 87241520 uintx LoopStripMiningIterShortLoop = 100 0 bool ParallelRefProcEnabled = true false uintx StringTableSize = 65536 60013 bool UseDynamicNumberOfGCThreads = true false