GC 相关详细参数
C:\Program Files\Java\jdk1.8.0_121\bin>java -XX:+PrintFlagsFinal -version | findstr "GC"
uintx AdaptiveSizeMajorGCDecayTimeScale = 10 {product}
uintx AutoGCSelectPauseMillis = 5000 {product}
bool BindGCTaskThreadsToCPUs = false {product}
uintx CMSFullGCsBeforeCompaction = 0 {product}
uintx ConcGCThreads = 0 {product}
bool DisableExplicitGC = false {product}
bool ExplicitGCInvokesConcurrent = false {product}
bool ExplicitGCInvokesConcurrentAndUnloadsClasses = false {product}
uintx G1MixedGCCountTarget = 8 {product}
uintx GCDrainStackTargetSize = 64 {product}
uintx GCHeapFreeLimit = 2 {product}
uintx GCLockerEdenExpansionPercent = 5 {product}
bool GCLockerInvokesConcurrent = false {product}
uintx GCLogFileSize = 8192 {product}
uintx GCPauseIntervalMillis = 0 {product}
uintx GCTaskTimeStampEntries = 200 {product}
uintx GCTimeLimit = 98 {product}
uintx GCTimeRatio = 99 {product}
bool HeapDumpAfterFullGC = false {manageable}
bool HeapDumpBeforeFullGC = false {manageable}
uintx HeapSizePerGCThread = 87241520 {product}
uintx MaxGCMinorPauseMillis = 4294967295 {product}
uintx MaxGCPauseMillis = 4294967295 {product}
uintx NumberOfGCLogFiles = 0 {product}
intx ParGCArrayScanChunk = 50 {product}
uintx ParGCDesiredObjsFromOverflowList = 20 {product}
bool ParGCTrimOverflow = true {product}
bool ParGCUseLocalOverflow = false {product}
uintx ParallelGCBufferWastePct = 10 {product}
uintx ParallelGCThreads = 13 {product}
bool ParallelGCVerbose = false {product}
bool PrintClassHistogramAfterFullGC = false {manageable}
bool PrintClassHistogramBeforeFullGC = false {manageable}
bool PrintGC = false {manageable}
bool PrintGCApplicationConcurrentTime = false {product}
bool PrintGCApplicationStoppedTime = false {product}
bool PrintGCCause = true {product}
bool PrintGCDateStamps = false {manageable}
bool PrintGCDetails = false {manageable}
bool PrintGCID = false {manageable}
bool PrintGCTaskTimeStamps = false {product}
bool PrintGCTimeStamps = false {manageable}
bool PrintHeapAtGC = false {product rw}
bool PrintHeapAtGCExtended = false {product rw}
bool PrintJNIGCStalls = false {product}
bool PrintParallelOldGCPhaseTimes = false {product}
bool PrintReferenceGC = false {product}
bool ScavengeBeforeFullGC = true {product}
bool TraceDynamicGCThreads = false {product}
bool TraceParallelOldGCTasks = false {product}
bool UseAdaptiveGCBoundary = false {product}
bool UseAdaptiveSizeDecayMajorGCCost = true {product}
bool UseAdaptiveSizePolicyWithSystemGC = false {product}
bool UseAutoGCSelectPolicy = false {product}
bool UseConcMarkSweepGC = false {product}
bool UseDynamicNumberOfGCThreads = false {product}
bool UseG1GC = false {product}
bool UseGCLogFileRotation = false {product}
bool UseGCOverheadLimit = true {product}
bool UseGCTaskAffinity = false {product}
bool UseMaximumCompactionOnSystemGC = true {product}
bool UseParNewGC = false {product}
bool UseParallelGC := true {product}
bool UseParallelOldGC = true {product}
bool UseSerialGC = false {product}
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
gogogo
