Java启动参数(-, -X, -XX参数)的使用
作者:guyue35
Java启动参数分类
- 类别1: 其一是标准参数(-),所有的JVM实现都必须实现这些参数的功能,而且向后兼容;
- 类别2: 其二是非标准参数(-X),默认jvm实现这些参数的功能,但是并不保证所有jvm实现都满足,且不保证向后兼容;
- 类别3: 其三是非Stable参数(-XX),此类参数各个jvm实现会有所不同,将来可能会随时取消,需要慎重使用;
一、JVM标准参数(-)
获取方法: java -help
JVM的标准参数都是以”-“开头,通过输入”java -help”或者”java -?”,可以查看JVM标准参数列表。如
以下是JVM标准参数的详细介绍(加粗标记的参数请着重注意):
-client
设置jvm使用client模式,特点是启动速度比较快,但运行时性能和内存管理效率不高,通常用于客户端应用程序或者PC应用开发和调试。
-server
设置jvm使server模式,特点是启动速度比较慢,但运行时性能和内存管理效率很高,适用于生产环境。在具有64位能力的jdk环境下将默认启用该模式,而忽略-client参数。
-agentlib:libname[=options]
用于装载本地lib包;
其中libname为本地代理库文件名,默认搜索路径为环境变量PATH中的路径,options为传给本地库启动时的参数,多个参数之间用逗号分隔。在Windows平台上jvm搜索本地库名为libname.dll的文件,在linux上jvm搜索本地库名为libname.so的文件,搜索路径环境变量在不同系统上有所不同,比如Solaries上就默认搜索LD_LIBRARY_PATH。
比如:-agentlib:hprof
用来获取jvm的运行情况,包括CPU、内存、线程等的运行数据,并可输出到指定文件中;windows中搜索路径为JRE_HOME/bin/hprof.dll。
-agentpath:pathname[=options]
按全路径装载本地库,不再搜索PATH中的路径;其他功能和agentlib相同;更多的信息待续,在后续的JVMTI部分会详述。
-classpath classpath
-cp classpath
告知jvm搜索目录名、jar文档名、zip文档名,之间用分号;分隔;使用-classpath后jvm将不再使用CLASSPATH中的类搜索路径,如果-classpath和CLASSPATH都没有设置,则jvm使用当前路径(.)作为类搜索路径。
jvm搜索类的方式和顺序为:Bootstrap,Extension,User。
Bootstrap中的路径是jvm自带的jar或zip文件,jvm首先搜索这些包文件,用System.getProperty(“sun.boot.class.path”)可得到搜索路径。
Extension是位于JRE_HOME/lib/ext目录下的jar文件,jvm在搜索完Bootstrap后就搜索该目录下的jar文件,用System.getProperty(“java.ext.dirs”)可得到搜索路径。
User搜索顺序为当前路径.、CLASSPATH、-classpath,jvm最后搜索这些目录,用System.getProperty(“java.class.path”)可得到搜索路径。
-Dproperty=value
设置系统属性名/值对,运行在此jvm之上的应用程序可用System.getProperty(“property”)得到value的值。
如果value中有空格,则需要用双引号将该值括起来,如-Dname=”space string”。
该参数通常用于设置系统级全局变量值,如配置文件路径,以便该属性在程序中任何地方都可访问。
-enableassertions[:”…” | : ]
-ea[:”…” | : ]
上述参数就用来设置jvm是否启动断言机制(从JDK 1.4开始支持),缺省时jvm关闭断言机制。
用-ea 可打开断言机制,不加和classname时运行所有包和类中的断言,如果希望只运行某些包或类中的断言,可将包名或类名加到-ea之后。例如要启动包com.wombat.fruitbat中的断言,可用命令java -ea:com.wombat.fruitbat…。
-disableassertions[:”…” | :
二、JVM非标准参数(-X)
获取方法: java -X
通过”java -X”可以输出非标准参数列表,如下所示:
非标准参数又称为扩展参数,其列表如下:
-Xint
设置jvm以解释模式运行,所有的字节码将被直接执行,而不会编译成本地码。
-Xbatch
关闭后台代码编译,强制在前台编译,编译完成之后才能进行代码执行;
默认情况下,jvm在后台进行编译,若没有编译完成,则前台运行代码时以解释模式运行。
-Xbootclasspath:bootclasspath
让jvm从指定路径(可以是分号分隔的目录、jar、或者zip)中加载bootclass,用来替换jdk的rt.jar;若非必要,一般不会用到;
-Xbootclasspath/a:path
将指定路径的所有文件追加到默认bootstrap路径中;
-Xbootclasspath/p:path
让jvm优先于bootstrap默认路径加载指定路径的所有文件;
-Xcheck:jni
对JNI函数进行附加check;此时jvm将校验传递给JNI函数参数的合法性,在本地代码中遇到非法数据时,jmv将报一个致命错误而终止;使用该参数后将造成性能下降,请慎用。
-Xfuture
让jvm对类文件执行严格的格式检查(默认jvm不进行严格格式检查),以符合类文件格式规范,推荐开发人员使用该参数。
-Xnoclassgc
关闭针对class的gc功能;因为其阻止内存回收,所以可能会导致OutOfMemoryError错误,慎用;
-Xincgc
开启增量gc(默认为关闭);这有助于减少长时间GC时应用程序出现的停顿;但由于可能和应用程序并发执行,所以会降低CPU对应用的处理能力。
-Xloggc:file
与-verbose:gc功能类似,只是将每次GC事件的相关情况记录到一个文件中,文件的位置最好在本地,以避免网络的潜在问题。
若与verbose命令同时出现在命令行中,则以-Xloggc为准。
-Xms
指定jvm堆的初始大小,默认为物理内存的1/64,最小为1M;可以指定单位,比如k、m,若不指定,则默认为字节。
-Xmx
指定jvm堆的最大值,默认为物理内存的1/4或者1G,最小为2M;单位与-Xms一致。
-Xss
设置单个线程栈的大小,一般默认为512k。
-Xprof
输出 cpu 配置文件数据
-Xrs
减少jvm对操作系统信号(signals)的使用,该参数从1.3.1开始有效;
从jdk1.3.0开始,jvm允许程序在关闭之前还可以执行一些代码(比如关闭数据库的连接池),即使jvm被突然终止;
jvm关闭工具通过监控控制台的相关事件而满足以上的功能;更确切的说,通知在关闭工具执行之前,先注册控制台的控制handler,然后对CTRL_C_EVENT, CTRL_CLOSE_EVENT, CTRL_LOGOFF_EVENT, and CTRL_SHUTDOWN_EVENT这几类事件直接返回true。
但如果jvm以服务的形式在后台运行(比如servlet引擎),他能接收CTRL_LOGOFF_EVENT事件,但此时并不需要初始化关闭程序;为了避免类似冲突的再次出现,从jdk1.3.1开始提供-Xrs参数;当此参数被设置之后,jvm将不接收控制台的控制handler,也就是说他不监控和处理CTRL_C_EVENT, CTRL_CLOSE_EVENT, CTRL_LOGOFF_EVENT, or CTRL_SHUTDOWN_EVENT事件。
上面这些参数中,比如-Xmsn、-Xmxn……都是我们性能优化中很重要的参数;
-Xprof、-Xloggc:file等都是在没有专业跟踪工具情况下排错的好手;
三、JVM非Stable参数(-XX)
获取方法: java -XX:+PrintFlagsInitial
Java 6(update 21oder 21之后)版本, HotSpot JVM 提供给了两个新的参数,在JVM启动后,在命令行中可以输出所有XX参数和值。
-XX:+PrintFlagsFinal and -XX:+PrintFlagsInitial
读者可以使用以下语句输出所有的参数和默认值
java -XX:+PrintFlagsInitial >>1.txt 或者 java -XX:+PrintFlagsInitial>>1.txt
由于非State参数非常的多,因此这里就不列出所有参数进行讲解。只介绍我们比较常用的。
Java HotSpot VM中-XX:的可配置参数列表进行描述;
这些参数可以被松散的聚合成三类:
行为参数(Behavioral Options):用于改变jvm的一些基础行为;
性能调优(Performance Tuning):用于jvm的性能调优;
调试参数(Debugging Options):一般用于打开跟踪、打印、输出等jvm参数,用于显示jvm更加详细的信息;
行为参数(功能开关) -XX:-DisableExplicitGC 禁止调用System.gc();但jvm的gc仍然有效 -XX:+MaxFDLimit 最大化文件描述符的数量限制 -XX:+ScavengeBeforeFullGC 新生代GC优先于Full GC执行 -XX:+UseGCOverheadLimit 在抛出OOM之前限制jvm耗费在GC上的时间比例 -XX:-UseConcMarkSweepGC 对老生代采用并发标记交换算法进行GC -XX:-UseParallelGC 启用并行GC -XX:-UseParallelOldGC 对Full GC启用并行,当-XX:-UseParallelGC启用时该项自动启用 -XX:-UseSerialGC 启用串行GC -XX:+UseThreadPriorities 启用本地线程优先级 性能调优 -XX:LargePageSizeInBytes=4m 设置用于Java堆的大页面尺寸 -XX:MaxHeapFreeRatio=70 GC后java堆中空闲量占的最大比例 -XX:MaxNewSize=size 新生成对象能占用内存的最大值 -XX:MaxPermSize=64m 老生代对象能占用内存的最大值 -XX:MinHeapFreeRatio=40 GC后java堆中空闲量占的最小比例 -XX:NewRatio=2 新生代内存容量与老生代内存容量的比例 -XX:NewSize=2.125m 新生代对象生成时占用内存的默认值 -XX:ReservedCodeCacheSize=32m 保留代码占用的内存容量 -XX:ThreadStackSize=512 设置线程栈大小,若为0则使用系统默认值 -XX:+UseLargePages 使用大页面内存 调试参数 -XX:-CITime 打印消耗在JIT编译的时间 -XX:ErrorFile=./hs_err_pid<pid>.log 保存错误日志或者数据到文件中 -XX:-ExtendedDTraceProbes 开启solaris特有的dtrace探针 -XX:HeapDumpPath=./java_pid<pid>.hprof 指定导出堆信息时的路径或文件名 -XX:-HeapDumpOnOutOfMemoryError 当首次遭遇OOM时导出此时堆中相关信息 -XX:OnError="<cmd args>;<cmd args>" 出现致命ERROR之后运行自定义命令 -XX:OnOutOfMemoryError="<cmd args>;<cmd args>" 当首次遭遇OOM时执行自定义命令 -XX:-PrintClassHistogram 遇到Ctrl-Break后打印类实例的柱状信息,与jmap -histo功能相同 -XX:-PrintConcurrentLocks 遇到Ctrl-Break后打印并发锁的相关信息,与jstack -l功能相同 -XX:-PrintCommandLineFlags 打印在命令行中出现过的标记 -XX:-PrintCompilation 当一个方法被编译时打印相关信息 -XX:-PrintGC 每次GC时打印相关信息 -XX:-PrintGC Details 每次GC时打印详细信息 -XX:-PrintGCTimeStamps 打印每次GC的时间戳 -XX:-TraceClassLoading 跟踪类的加载信息 -XX:-TraceClassLoadingPreorder 跟踪被引用到的所有类的加载信息 -XX:-TraceClassResolution 跟踪常量池 -XX:-TraceClassUnloading 跟踪类的卸载信息 -XX:-TraceLoaderConstraints 跟踪类加载器约束的相关信息
JDK8-XX参数整理
JDK8 获取所有-XX参数列表
java -XX:+PrintFlagsInitial >>1.txt
1.8所有-XX参数列表
数据类型 | 参数名 | 默认值 | 不清楚干嘛的 | 自己的总结 |
---|---|---|---|---|
intx | ActiveProcessorCount | -1 | {product} | |
uintx | AdaptiveSizeDecrementScaleFactor | 4 | {product} | |
uintx | AdaptiveSizeMajorGCDecayTimeScale | 10 | {product} | |
uintx | AdaptiveSizePausePolicy | 0 | {product} | |
uintx | AdaptiveSizePolicyCollectionCostMargin | 50 | {product} | |
uintx | AdaptiveSizePolicyInitializingSteps | 20 | {product} | |
uintx | AdaptiveSizePolicyOutputInterval | 0 | {product} | |
uintx | AdaptiveSizePolicyWeight | 10 | {product} | |
uintx | AdaptiveSizeThroughPutPolicy | 0 | {product} | |
uintx | AdaptiveTimeWeight | 25 | {product} | |
bool | AdjustConcurrency | false | {product} | |
bool | AggressiveHeap | false | {product} | |
bool | AggressiveOpts | false | {product} | |
intx | AliasLevel | 3 | {C2 | product} |
bool | AlignVector | true | {C2 | product} |
intx | AllocateInstancePrefetchLines | 1 | {product} | |
intx | AllocatePrefetchDistance | -1 | {product} | |
intx | AllocatePrefetchInstr | 0 | {product} | |
intx | AllocatePrefetchLines | 3 | {product} | |
intx | AllocatePrefetchStepSize | 16 | {product} | |
intx | AllocatePrefetchStyle | 1 | {product} | |
bool | AllowJNIEnvProxy | false | {product} | |
bool | AllowNonVirtualCalls | false | {product} | |
bool | AllowParallelDefineClass | false | {product} | |
bool | AllowUserSignalHandlers | false | {product} | |
bool | AlwaysActAsServerClassMachine | false | {product} | |
bool | AlwaysCompileLoopMethods | false | {product} | |
bool | AlwaysLockClassLoader | false | {product} | |
bool | AlwaysPreTouch | false | {product} | |
bool | AlwaysRestoreFPU | false | {product} | |
bool | AlwaysTenure | false | {product} | |
bool | AssertOnSuspendWaitFailure | false | {product} | |
bool | AssumeMP | false | {product} | |
intx | AutoBoxCacheMax | 128 | {C2 | product} |
uintx | AutoGCSelectPauseMillis | 5000 | {product} | |
intx | BCEATraceLevel | 0 | {product} | |
intx | BackEdgeThreshold | 100000 | {pd | product} |
bool | BackgroundCompilation | true | {pd | product} |
uintx | BaseFootPrintEstimate | 268435456 | {product} | |
intx | BiasedLockingBulkRebiasThreshold | 20 | {product} | |
intx | BiasedLockingBulkRevokeThreshold | 40 | {product} | |
intx | BiasedLockingDecayTime | 25000 | {product} | |
intx | BiasedLockingStartupDelay | 4000 | {product} | |
bool | BindGCTaskThreadsToCPUs | false | {product} | |
bool | BlockLayoutByFrequency | true | {C2 | product} |
intx | BlockLayoutMinDiamondPercentage | 20 | {C2 | product} |
bool | BlockLayoutRotateLoops | true | {C2 | product} |
bool | BranchOnRegister | false | {C2 | product} |
bool | BytecodeVerificationLocal | false | {product} | |
bool | BytecodeVerificationRemote | true | {product} | |
bool | C1OptimizeVirtualCallProfiling | true | {C1 | product} |
bool | C1ProfileBranches | true | {C1 | product} |
bool | C1ProfileCalls | true | {C1 | product} |
bool | C1ProfileCheckcasts | true | {C1 | product} |
bool | C1ProfileInlinedCalls | true | {C1 | product} |
bool | C1ProfileVirtualCalls | true | {C1 | product} |
bool | C1UpdateMethodData | true | {C1 | product} |
intx | CICompilerCount | 2 | {product} | |
bool | CICompilerCountPerCPU | false | {product} | |
bool | CITime | false | {product} | |
bool | CMSAbortSemantics | false | {product} | |
uintx | CMSAbortablePrecleanMinWorkPerIteration | 100 | {product} | |
intx | CMSAbortablePrecleanWaitMillis | 100 | {manageable} | |
uintx | CMSBitMapYieldQuantum | 10485760 | {product} | |
uintx | CMSBootstrapOccupancy | 50 | {product} | |
bool | CMSClassUnloadingEnabled | true | {product} | |
uintx | CMSClassUnloadingMaxInterval | 0 | {product} | |
bool | CMSCleanOnEnter | true | {product} | |
bool | CMSCompactWhenClearAllSoftRefs | true | {product} | |
uintx | CMSConcMarkMultiple | 32 | {product} | |
bool | CMSConcurrentMTEnabled | true | {product} | |
uintx | CMSCoordinatorYieldSleepCount | 10 | {product} | |
bool | CMSDumpAtPromotionFailure | false | {product} | |
bool | CMSEdenChunksRecordAlways | true | {product} | |
uintx | CMSExpAvgFactor | 50 | {product} | |
bool | CMSExtrapolateSweep | false | {product} | |
uintx | CMSFullGCsBeforeCompaction | 0 | {product} | |
uintx | CMSIncrementalDutyCycle | 10 | {product} | |
uintx | CMSIncrementalDutyCycleMin | 0 | {product} | |
bool | CMSIncrementalMode | false | {product} | |
uintx | CMSIncrementalOffset | 0 | {product} | |
bool | CMSIncrementalPacing | true | {product} | |
uintx | CMSIncrementalSafetyFactor | 10 | {product} | |
uintx | CMSIndexedFreeListReplenish | 4 | {product} | |
intx | CMSInitiatingOccupancyFraction | -1 | {product} | |
uintx | CMSIsTooFullPercentage | 98 | {product} | |
double | CMSLargeCoalSurplusPercent | 0.950000 | {product} | |
double | CMSLargeSplitSurplusPercent | 1.000000 | {product} | |
bool | CMSLoopWarn | false | {product} | |
uintx | CMSMaxAbortablePrecleanLoops | 0 | {product} | |
intx | CMSMaxAbortablePrecleanTime | 5000 | {product} | |
uintx | CMSOldPLABMax | 1024 | {product} | |
uintx | CMSOldPLABMin | 16 | {product} | |
uintx | CMSOldPLABNumRefills | 4 | {product} | |
uintx | CMSOldPLABReactivityFactor | 2 | {product} | |
bool | CMSOldPLABResizeQuicker | false | {product} | |
uintx | CMSOldPLABToleranceFactor | 4 | {product} | |
bool | CMSPLABRecordAlways | true | {product} | |
uintx | CMSParPromoteBlocksToClaim | 16 | {product} | |
bool | CMSParallelInitialMarkEnabled | true | {product} | |
bool | CMSParallelRemarkEnabled | true | {product} | |
bool | CMSParallelSurvivorRemarkEnabled | true | {product} | |
uintx | CMSPrecleanDenominator | 3 | {product} | |
uintx | CMSPrecleanIter | 3 | {product} | |
uintx | CMSPrecleanNumerator | 2 | {product} | |
bool | CMSPrecleanRefLists1 | true | {product} | |
bool | CMSPrecleanRefLists2 | false | {product} | |
bool | CMSPrecleanSurvivors1 | false | {product} | |
bool | CMSPrecleanSurvivors2 | true | {product} | |
uintx | CMSPrecleanThreshold | 1000 | {product} | |
bool | CMSPrecleaningEnabled | true | {product} | |
bool | CMSPrintChunksInDump | false | {product} | |
bool | CMSPrintEdenSurvivorChunks | false | {product} | |
bool | CMSPrintObjectsInDump | false | {product} | |
uintx | CMSRemarkVerifyVariant | 1 | {product} | |
bool | CMSReplenishIntermediate | true | {product} | |
uintx | CMSRescanMultiple | 32 | {product} | |
uintx | CMSSamplingGrain | 16384 | {product} | |
bool | CMSScavengeBeforeRemark | false | {product} | |
uintx | CMSScheduleRemarkEdenPenetration | 50 | {product} | |
uintx | CMSScheduleRemarkEdenSizeThreshold | 2097152 | {product} | |
uintx | CMSScheduleRemarkSamplingRatio | 5 | {product} | |
double | CMSSmallCoalSurplusPercent | 1.050000 | {product} | |
double | CMSSmallSplitSurplusPercent | 1.100000 | {product} | |
bool | CMSSplitIndexedFreeListBlocks | true | {product} | |
intx | CMSTriggerInterval | -1 | {manageable} | |
uintx | CMSTriggerRatio | 80 | {product} | |
intx | CMSWaitDuration | 2000 | {manageable} | |
uintx | CMSWorkQueueDrainThreshold | 10 | {product} | |
bool | CMSYield | true | {product} | |
uintx | CMSYieldSleepCount | 0 | {product} | |
uintx | CMSYoungGenPerWorker | 67108864 | {pd | product} |
uintx | CMS_FLSPadding | 1 | {product} | |
uintx | CMS_FLSWeight | 75 | {product} | |
uintx | CMS_SweepPadding | 1 | {product} | |
uintx | CMS_SweepTimerThresholdMillis | 10 | {product} | |
uintx | CMS_SweepWeight | 75 | {product} | |
bool | CheckEndorsedAndExtDirs | false | {product} | |
bool | CheckJNICalls | false | {product} | |
bool | ClassUnloading | true | {product} | |
bool | ClassUnloadingWithConcurrentMark | true | {product} | |
intx | ClearFPUAtPark | 0 | {product} | |
bool | ClipInlining | true | {product} | |
uintx | CodeCacheExpansionSize | 65536 | {pd | product} |
uintx | CodeCacheMinimumFreeSpace | 512000 | {product} | |
bool | CollectGen0First | false | {product} | |
bool | CompactFields | true | {product} | |
intx | CompilationPolicyChoice | 0 | {product} | |
ccstrlist | CompileCommand | {product} | ||
ccstr | CompileCommandFile | {product} | ||
ccstrlist | CompileOnly | {product} | ||
intx | CompileThreshold | 10000 | {pd | product} |
bool | CompilerThreadHintNoPreempt | true | {product} | |
intx | CompilerThreadPriority | -1 | {product} | |
intx | CompilerThreadStackSize | 0 | {pd | product} |
uintx | CompressedClassSpaceSize | 1073741824 | {product} | |
uintx | ConcGCThreads | 0 | {product} | |
intx | ConditionalMoveLimit | 3 | {C2 | pd |
intx | ContendedPaddingWidth | 128 | {product} | |
bool | ConvertSleepToYield | true | {pd | product} |
bool | ConvertYieldToSleep | false | {product} | |
bool | CrashOnOutOfMemoryError | false | {product} | |
bool | CreateMinidumpOnCrash | false | {product} | |
bool | CriticalJNINatives | true | {product} | |
bool | DTraceAllocProbes | false | {product} | |
bool | DTraceMethodProbes | false | {product} | |
bool | DTraceMonitorProbes | false | {product} | |
bool | Debugging | false | {product} | |
uintx | DefaultMaxRAMFraction | 4 | {product} | |
intx | DefaultThreadPriority | -1 | {product} | |
intx | DeferPollingPageLoopCount | -1 | {product} | |
intx | DeferThrSuspendLoopCount | 4000 | {product} | |
bool | DeoptimizeRandom | false | {product} | |
bool | DisableAttachMechanism | false | {product} | |
bool | DisableExplicitGC | false | {product} | |
bool | DisplayVMOutputToStderr | false | {product} | |
bool | DisplayVMOutputToStdout | false | {product} | |
bool | DoEscapeAnalysis | true | {C2 | product} |
bool | DontCompileHugeMethods | true | {product} | |
bool | DontYieldALot | false | {pd | product} |
ccstr | DumpLoadedClassList | {product} | ||
bool | DumpReplayDataOnError | true | {product} | |
bool | DumpSharedSpaces | false | {product} | |
bool | EagerXrunInit | false | {product} | |
intx | EliminateAllocationArraySizeLimit | 64 | {C2 | product} |
bool | EliminateAllocations | true | {C2 | product} |
bool | EliminateAutoBox | true | {C2 | product} |
bool | EliminateLocks | true | {C2 | product} |
bool | EliminateNestedLocks | true | {C2 | product} |
intx | EmitSync | 0 | {product} | |
bool | EnableContended | true | {product} | |
bool | EnableResourceManagementTLABCache | true | {product} | |
bool | EnableSharedLookupCache | true | {product} | |
bool | EnableTracing | false | {product} | |
uintx | ErgoHeapSizeLimit | 0 | {product} | |
ccstr | ErrorFile | {product} | ||
ccstr | ErrorReportServer | {product} | ||
double | EscapeAnalysisTimeout | 20.000000 | {C2 | product} |
bool | EstimateArgEscape | true | {product} | |
bool | ExitOnOutOfMemoryError | false | {product} | |
bool | ExplicitGCInvokesConcurrent | false | {product} | |
bool | ExplicitGCInvokesConcurrentAndUnloadsClasses | false | {product} | |
bool | ExtendedDTraceProbes | false | {product} | |
ccstr | ExtraSharedClassListFile | {product} | ||
bool | FLSAlwaysCoalesceLarge | false | {product} | |
uintx | FLSCoalescePolicy | 2 | {product} | |
double | FLSLargestBlockCoalesceProximity | 0.990000 | {product} | |
bool | FailOverToOldVerifier | true | {product} | |
bool | FastTLABRefill | true | {product} | |
intx | FenceInstruction | 0 | {ARCH | product} |
intx | FieldsAllocationStyle | 1 | {product} | |
bool | FilterSpuriousWakeups | true | {product} | |
ccstr | FlightRecorderOptions | {product} | ||
bool | ForceNUMA | false | {product} | |
bool | ForceTimeHighResolution | false | {product} | |
intx | FreqInlineSize | 325 | {pd | product} |
double | G1ConcMarkStepDurationMillis | 10.000000 | {product} | |
uintx | G1ConcRSHotCardLimit | 4 | {product} | |
uintx | G1ConcRSLogCacheSize | 10 | {product} | |
intx | G1ConcRefinementGreenZone | 0 | {product} | |
intx | G1ConcRefinementRedZone | 0 | {product} | |
intx | G1ConcRefinementServiceIntervalMillis | 300 | {product} | |
uintx | G1ConcRefinementThreads | 0 | {product} | |
intx | G1ConcRefinementThresholdStep | 0 | {product} | |
intx | G1ConcRefinementYellowZone | 0 | {product} | |
uintx | G1ConfidencePercent | 50 | {product} | |
uintx | G1HeapRegionSize | 0 | {product} | |
uintx | G1HeapWastePercent | 5 | {product} | |
uintx | G1MixedGCCountTarget | 8 | {product} | |
intx | G1RSetRegionEntries | 0 | {product} | |
uintx | G1RSetScanBlockSize | 64 | {product} | |
intx | G1RSetSparseRegionEntries | 0 | {product} | |
intx | G1RSetUpdatingPauseTimePercent | 10 | {product} | |
intx | G1RefProcDrainInterval | 10 | {product} | |
uintx | G1ReservePercent | 10 | {product} | |
uintx | G1SATBBufferEnqueueingThresholdPercent | 60 | {product} | |
intx | G1SATBBufferSize | 1024 | {product} | |
intx | G1UpdateBufferSize | 256 | {product} | |
bool | G1UseAdaptiveConcRefinement | true | {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} | |
uintx | HeapBaseMinAddress | 2147483648 | {pd | product} |
bool | HeapDumpAfterFullGC | false | {manageable} | |
bool | HeapDumpBeforeFullGC | false | {manageable} | |
bool | HeapDumpOnOutOfMemoryError | false | {manageable} | |
ccstr | HeapDumpPath | {manageable} | ||
uintx | HeapFirstMaximumCompactionCount | 3 | {product} | |
uintx | HeapMaximumCompactionInterval | 20 | {product} | |
uintx | HeapSizePerGCThread | 87241520 | {product} | |
bool | IgnoreEmptyClassPaths | false | {product} | |
bool | IgnoreUnrecognizedVMOptions | false | {product} | |
uintx | IncreaseFirstTierCompileThresholdAt | 50 | {product} | |
bool | IncrementalInline | true | {C2 | product} |
uintx | InitialBootClassLoaderMetaspaceSize | 4194304 | {product} | |
uintx | InitialCodeCacheSize | 2555904 | {pd | product} |
uintx | InitialHeapSize | 0 | {product} | |
uintx | InitialRAMFraction | 64 | {product} | |
double | InitialRAMPercentage | 1.562500 | {product} | |
uintx | InitialSurvivorRatio | 8 | {product} | |
uintx | InitialTenuringThreshold | 7 | {product} | |
uintx | InitiatingHeapOccupancyPercent | 45 | {product} | |
bool | Inline | true | {product} | |
ccstr | InlineDataFile | {product} | ||
intx | InlineSmallCode | 1000 | {pd | product} |
bool | InlineSynchronizedMethods | true | {C1 | product} |
bool | InsertMemBarAfterArraycopy | true | {C2 | product} |
intx | InteriorEntryAlignment | 16 | {C2 | pd |
intx | InterpreterProfilePercentage | 33 | {product} | |
bool | JNIDetachReleasesMonitors | true | {product} | |
bool | JavaMonitorsInStackTrace | true | {product} | |
intx | JavaPriority10_To_OSPriority | -1 | {product} | |
intx | JavaPriority1_To_OSPriority | -1 | {product} | |
intx | JavaPriority2_To_OSPriority | -1 | {product} | |
intx | JavaPriority3_To_OSPriority | -1 | {product} | |
intx | JavaPriority4_To_OSPriority | -1 | {product} | |
intx | JavaPriority5_To_OSPriority | -1 | {product} | |
intx | JavaPriority6_To_OSPriority | -1 | {product} | |
intx | JavaPriority7_To_OSPriority | -1 | {product} | |
intx | JavaPriority8_To_OSPriority | -1 | {product} | |
intx | JavaPriority9_To_OSPriority | -1 | {product} | |
bool | LIRFillDelaySlots | false | {C1 | pd |
uintx | LargePageHeapSizeThreshold | 134217728 | {product} | |
uintx | LargePageSizeInBytes | 0 | {product} | |
bool | LazyBootClassLoader | true | {product} | |
intx | LiveNodeCountInliningCutoff | 40000 | {C2 | product} |
bool | LoadExecStackDllInVMThread | true | {product} | |
bool | LogCommercialFeatures | false | {product} | |
intx | LoopMaxUnroll | 16 | {C2 | product} |
intx | LoopOptsCount | 43 | {C2 | product} |
intx | LoopUnrollLimit | 60 | {C2 | pd |
intx | LoopUnrollMin | 4 | {C2 | product} |
bool | LoopUnswitching | true | {C2 | product} |
bool | ManagementServer | false | {product} | |
uintx | MarkStackSize | 4194304 | {product} | |
uintx | MarkStackSizeMax | 536870912 | {product} | |
uintx | MarkSweepAlwaysCompactCount | 4 | {product} | |
uintx | MarkSweepDeadRatio | 5 | {product} | |
intx | MaxBCEAEstimateLevel | 5 | {product} | |
intx | MaxBCEAEstimateSize | 150 | {product} | |
uintx | MaxDirectMemorySize | 0 | {product} | |
bool | MaxFDLimit | true | {product} | |
uintx | MaxGCMinorPauseMillis | 18446744073709551615 | {product} | |
uintx | MaxGCPauseMillis | 18446744073709551615 | {product} | |
uintx | MaxHeapFreeRatio | 70 | {manageable} | |
uintx | MaxHeapSize | 130862280 | {product} | |
intx | MaxInlineLevel | 9 | {product} | |
intx | MaxInlineSize | 35 | {product} | |
intx | MaxJNILocalCapacity | 65536 | {product} | |
intx | MaxJavaStackTraceDepth | 1024 | {product} | |
intx | MaxJumpTableSize | 65000 | {C2 | product} |
intx | MaxJumpTableSparseness | 5 | {C2 | product} |
intx | MaxLabelRootDepth | 1100 | {C2 | product} |
intx | MaxLoopPad | 15 | {C2 | product} |
uintx | MaxMetaspaceExpansion | 5452592 | {product} | |
uintx | MaxMetaspaceFreeRatio | 70 | {product} | |
uintx | MaxMetaspaceSize | 18446744073709551615 | {product} | |
uintx | MaxNewSize | 18446744073709551615 | {product} | |
intx | MaxNodeLimit | 80000 | {C2 | product} |
uint64_t | MaxRAM | 137438953472 | {pd | product} |
uintx | MaxRAMFraction | 4 | {product} | |
double | MaxRAMPercentage | 25.000000 | {product} | |
intx | MaxRecursiveInlineLevel | 1 | {product} | |
uintx | MaxTenuringThreshold | 15 | {product} | |
intx | MaxTrivialSize | 6 | {product} | |
intx | MaxVectorSize | 32 | {C2 | product} |
uintx | MetaspaceSize | 21810376 | {pd | product} |
bool | MethodFlushing | true | {product} | |
uintx | MinHeapDeltaBytes | 170392 | {product} | |
uintx | MinHeapFreeRatio | 40 | {manageable} | |
intx | MinInliningThreshold | 250 | {product} | |
intx | MinJumpTableSize | 10 | {C2 | pd |
uintx | MinMetaspaceExpansion | 340784 | {product} | |
uintx | MinMetaspaceFreeRatio | 40 | {product} | |
uintx | MinRAMFraction | 2 | {product} | |
double | MinRAMPercentage | 50.000000 | {product} | |
uintx | MinSurvivorRatio | 3 | {product} | |
uintx | MinTLABSize | 2048 | {product} | |
intx | MonitorBound | 0 | {product} | |
bool | MonitorInUseLists | false | {product} | |
intx | MultiArrayExpandLimit | 6 | {C2 | product} |
bool | MustCallLoadClassInternal | false | {product} | |
uintx | NUMAChunkResizeWeight | 20 | {product} | |
uintx | NUMAInterleaveGranularity | 2097152 | {product} | |
uintx | NUMAPageScanRate | 256 | {product} | |
uintx | NUMASpaceResizeRate | 1073741824 | {product} | |
bool | NUMAStats | false | {product} | |
ccstr | NativeMemoryTracking | off | {product} | |
bool | NeedsDeoptSuspend | false | {pd | product} |
bool | NeverActAsServerClassMachine | false | {pd | product} |
bool | NeverTenure | false | {product} | |
uintx | NewRatio | 2 | {product} | |
uintx | NewSize | 1363144 | {product} | |
uintx | NewSizeThreadIncrease | 5320 | {pd | product} |
intx | NmethodSweepActivity | 10 | {product} | |
intx | NmethodSweepCheckInterval | 5 | {product} | |
intx | NmethodSweepFraction | 16 | {product} | |
intx | NodeLimitFudgeFactor | 2000 | {C2 | product} |
uintx | NumberOfGCLogFiles | 0 | {product} | |
intx | NumberOfLoopInstrToAlign | 4 | {C2 | product} |
intx | ObjectAlignmentInBytes | 8 | {lp64_product} | |
uintx | OldPLABSize | 1024 | {product} | |
uintx | OldPLABWeight | 50 | {product} | |
uintx | OldSize | 5452592 | {product} | |
bool | OmitStackTraceInFastThrow | true | {product} | |
ccstrlist | OnError | {product} | ||
ccstrlist | OnOutOfMemoryError | {product} | ||
intx | OnStackReplacePercentage | 140 | {pd | product} |
bool | OptimizeFill | true | {C2 | product} |
bool | OptimizePtrCompare | true | {C2 | product} |
bool | OptimizeStringConcat | true | {C2 | product} |
bool | OptoBundling | false | {C2 | pd |
intx | OptoLoopAlignment | 16 | {pd | product} |
bool | OptoScheduling | false | {C2 | pd |
uintx | PLABWeight | 75 | {product} | |
bool | PSChunkLargeArrays | true | {product} | |
intx | ParGCArrayScanChunk | 50 | {product} | |
uintx | ParGCDesiredObjsFromOverflowList | 20 | {product} | |
bool | ParGCTrimOverflow | true | {product} | |
bool | ParGCUseLocalOverflow | false | {product} | |
uintx | ParallelGCBufferWastePct | 10 | {product} | |
uintx | ParallelGCThreads | 0 | {product} | |
bool | ParallelGCVerbose | false | {product} | |
uintx | ParallelOldDeadWoodLimiterMean | 50 | {product} | |
uintx | ParallelOldDeadWoodLimiterStdDev | 80 | {product} | |
bool | ParallelRefProcBalancingEnabled | true | {product} | |
bool | ParallelRefProcEnabled | false | {product} | |
bool | PartialPeelAtUnsignedTests | true | {C2 | product} |
bool | PartialPeelLoop | true | {C2 | product} |
intx | PartialPeelNewPhiDelta | 0 | {C2 | product} |
uintx | PausePadding | 1 | {product} | |
intx | PerBytecodeRecompilationCutoff | 200 | {product} | |
intx | PerBytecodeTrapLimit | 4 | {product} | |
intx | PerMethodRecompilationCutoff | 400 | {product} | |
intx | PerMethodTrapLimit | 100 | {product} | |
bool | PerfAllowAtExitRegistration | false | {product} | |
bool | PerfBypassFileSystemCheck | false | {product} | |
intx | PerfDataMemorySize | 32768 | {product} | |
intx | PerfDataSamplingInterval | 50 | {product} | |
ccstr | PerfDataSaveFile | {product} | ||
bool | PerfDataSaveToFile | false | {product} | |
bool | PerfDisableSharedMem | false | {product} | |
intx | PerfMaxStringConstLength | 1024 | {product} | |
intx | PreInflateSpin | 10 | {pd | product} |
bool | PreferContainerQuotaForCPUCount | true | {product} | |
bool | PreferInterpreterNativeStubs | false | {pd | product} |
intx | PrefetchCopyIntervalInBytes | -1 | {product} | |
intx | PrefetchFieldsAhead | -1 | {product} | |
intx | PrefetchScanIntervalInBytes | -1 | {product} | |
bool | PreserveAllAnnotations | false | {product} | |
bool | PreserveFramePointer | false | {pd | product} |
uintx | PretenureSizeThreshold | 0 | {product} | |
bool | PrintAdaptiveSizePolicy | false | {product} | |
bool | PrintCMSInitiationStatistics | false | {product} | |
intx | PrintCMSStatistics | 0 | {product} | |
bool | PrintClassHistogram | false | {manageable} | |
bool | PrintClassHistogramAfterFullGC | false | {manageable} | |
bool | PrintClassHistogramBeforeFullGC | false | {manageable} | |
bool | PrintCodeCache | false | {product} | |
bool | PrintCodeCacheOnCompilation | false | {product} | |
bool | PrintCommandLineFlags | false | {product} | |
bool | PrintCompilation | false | {product} | |
bool | PrintConcurrentLocks | false | {manageable} | |
intx | PrintFLSCensus | 0 | {product} | |
intx | PrintFLSStatistics | 0 | {product} | |
bool | PrintFlagsFinal | false | {product} | |
bool | PrintFlagsInitial | false | {product} | |
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 | PrintHeapAtSIGBREAK | true | {product} | |
bool | PrintJNIGCStalls | false | {product} | |
bool | PrintJNIResolving | false | {product} | |
bool | PrintOldPLAB | false | {product} | |
bool | PrintOopAddress | false | {product} | |
bool | PrintPLAB | false | {product} | |
bool | PrintParallelOldGCPhaseTimes | false | {product} | |
bool | PrintPromotionFailure | false | {product} | |
bool | PrintReferenceGC | false | {product} | |
bool | PrintSafepointStatistics | false | {product} | |
intx | PrintSafepointStatisticsCount | 300 | {product} | |
intx | PrintSafepointStatisticsTimeout | -1 | {product} | |
bool | PrintSharedArchiveAndExit | false | {product} | |
bool | PrintSharedDictionary | false | {product} | |
bool | PrintSharedSpaces | false | {product} | |
bool | PrintStringDeduplicationStatistics | false | {product} | |
bool | PrintStringTableStatistics | false | {product} | |
bool | PrintTLAB | false | {product} | |
bool | PrintTenuringDistribution | false | {product} | |
bool | PrintTieredEvents | false | {product} | |
bool | PrintVMOptions | false | {product} | |
bool | PrintVMQWaitTime | false | {product} | |
bool | PrintWarnings | true | {product} | |
uintx | ProcessDistributionStride | 4 | {product} | |
bool | ProfileInterpreter | true | {pd | product} |
bool | ProfileIntervals | false | {product} | |
intx | ProfileIntervalsTicks | 100 | {product} | |
intx | ProfileMaturityPercentage | 20 | {product} | |
bool | ProfileVM | false | {product} | |
bool | ProfilerPrintByteCodeStatistics | false | {product} | |
bool | ProfilerRecordPC | false | {product} | |
uintx | PromotedPadding | 3 | {product} | |
uintx | QueuedAllocationWarningCount | 0 | {product} | |
uintx | RTMRetryCount | 5 | {ARCH | product} |
bool | RangeCheckElimination | true | {product} | |
intx | ReadPrefetchInstr | 0 | {ARCH | product} |
bool | ReassociateInvariants | true | {C2 | product} |
bool | ReduceBulkZeroing | true | {C2 | product} |
bool | ReduceFieldZeroing | true | {C2 | product} |
bool | ReduceInitialCardMarks | true | {C2 | product} |
bool | ReduceSignalUsage | false | {product} | |
intx | RefDiscoveryPolicy | 0 | {product} | |
bool | ReflectionWrapResolutionErrors | true | {product} | |
bool | RegisterFinalizersAtInit | true | {product} | |
bool | RelaxAccessControlCheck | false | {product} | |
ccstr | ReplayDataFile | {product} | ||
bool | RequireSharedSpaces | false | {product} | |
uintx | ReservedCodeCacheSize | 50331648 | {pd | product} |
bool | ResizeOldPLAB | true | {product} | |
bool | ResizePLAB | true | {product} | |
bool | ResizeTLAB | true | {pd | product} |
bool | RestoreMXCSROnJNICalls | false | {product} | |
bool | RestrictContended | true | {product} | |
bool | RewriteBytecodes | true | {pd | product} |
bool | RewriteFrequentPairs | true | {pd | product} |
intx | SafepointPollOffset | 256 | {C1 | pd |
intx | SafepointSpinBeforeYield | 2000 | {product} | |
bool | SafepointTimeout | false | {product} | |
intx | SafepointTimeoutDelay | 10000 | {product} | |
bool | ScavengeBeforeFullGC | true | {product} | |
intx | SelfDestructTimer | 0 | {product} | |
uintx | SharedBaseAddress | 34359738368 | {product} | |
ccstr | SharedClassListFile | {product} | ||
uintx | SharedMiscCodeSize | 122880 | {product} | |
uintx | SharedMiscDataSize | 4194304 | {product} | |
uintx | SharedReadOnlySize | 16777216 | {product} | |
uintx | SharedReadWriteSize | 16777216 | {product} | |
bool | ShowMessageBoxOnError | false | {product} | |
intx | SoftRefLRUPolicyMSPerMB | 1000 | {product} | |
bool | SpecialEncodeISOArray | true | {C2 | product} |
bool | SplitIfBlocks | true | {C2 | product} |
intx | StackRedPages | 1 | {pd | product} |
intx | StackShadowPages | 20 | {pd | product} |
bool | StackTraceInThrowable | true | {product} | |
intx | StackYellowPages | 2 | {pd | product} |
bool | StartAttachListener | false | {product} | |
intx | StarvationMonitorInterval | 200 | {product} | |
bool | StressLdcRewrite | false | {product} | |
uintx | StringDeduplicationAgeThreshold | 3 | {product} | |
uintx | StringTableSize | 60013 | {product} | |
bool | SuppressFatalErrorMessage | false | {product} | |
uintx | SurvivorPadding | 3 | {product} | |
uintx | SurvivorRatio | 8 | {product} | |
intx | SuspendRetryCount | 50 | {product} | |
intx | SuspendRetryDelay | 5 | {product} | |
intx | SyncFlags | 0 | {product} | |
ccstr | SyncKnobs | {product} | ||
intx | SyncVerbose | 0 | {product} | |
uintx | TLABAllocationWeight | 35 | {product} | |
uintx | TLABRefillWasteFraction | 64 | {product} | |
uintx | TLABSize | 0 | {product} | |
bool | TLABStats | true | {product} | |
uintx | TLABWasteIncrement | 4 | {product} | |
uintx | TLABWasteTargetPercent | 1 | {product} | |
uintx | TargetPLABWastePct | 10 | {product} | |
uintx | TargetSurvivorRatio | 50 | {product} | |
uintx | TenuredGenerationSizeIncrement | 20 | {product} | |
uintx | TenuredGenerationSizeSupplement | 80 | {product} | |
uintx | TenuredGenerationSizeSupplementDecay | 2 | {product} | |
intx | ThreadPriorityPolicy | 0 | {product} | |
bool | ThreadPriorityVerbose | false | {product} | |
uintx | ThreadSafetyMargin | 52428800 | {product} | |
intx | ThreadStackSize | 1024 | {pd | product} |
uintx | ThresholdTolerance | 10 | {product} | |
intx | Tier0BackedgeNotifyFreqLog | 10 | {product} | |
intx | Tier0InvokeNotifyFreqLog | 7 | {product} | |
intx | Tier0ProfilingStartPercentage | 200 | {product} | |
intx | Tier23InlineeNotifyFreqLog | 20 | {product} | |
intx | Tier2BackEdgeThreshold | 0 | {product} | |
intx | Tier2BackedgeNotifyFreqLog | 14 | {product} | |
intx | Tier2CompileThreshold | 0 | {product} | |
intx | Tier2InvokeNotifyFreqLog | 11 | {product} | |
intx | Tier3BackEdgeThreshold | 60000 | {product} | |
intx | Tier3BackedgeNotifyFreqLog | 13 | {product} | |
intx | Tier3CompileThreshold | 2000 | {product} | |
intx | Tier3DelayOff | 2 | {product} | |
intx | Tier3DelayOn | 5 | {product} | |
intx | Tier3InvocationThreshold | 200 | {product} | |
intx | Tier3InvokeNotifyFreqLog | 10 | {product} | |
intx | Tier3LoadFeedback | 5 | {product} | |
intx | Tier3MinInvocationThreshold | 100 | {product} | |
intx | Tier4BackEdgeThreshold | 40000 | {product} | |
intx | Tier4CompileThreshold | 15000 | {product} | |
intx | Tier4InvocationThreshold | 5000 | {product} | |
intx | Tier4LoadFeedback | 3 | {product} | |
intx | Tier4MinInvocationThreshold | 600 | {product} | |
bool | TieredCompilation | true | {pd | product} |
intx | TieredCompileTaskTimeout | 50 | {product} | |
intx | TieredRateUpdateMaxTime | 25 | {product} | |
intx | TieredRateUpdateMinTime | 1 | {product} | |
intx | TieredStopAtLevel | 4 | {product} | |
bool | TimeLinearScan | false | {C1 | product} |
bool | TraceBiasedLocking | false | {product} | |
bool | TraceClassLoading | false | {product | rw} |
bool | TraceClassLoadingPreorder | false | {product} | |
bool | TraceClassPaths | false | {product} | |
bool | TraceClassResolution | false | {product} | |
bool | TraceClassUnloading | false | {product | rw} |
bool | TraceDynamicGCThreads | false | {product} | |
bool | TraceGen0Time | false | {product} | |
bool | TraceGen1Time | false | {product} | |
ccstr | TraceJVMTI | {product} | ||
bool | TraceLoaderConstraints | false | {product | rw} |
bool | TraceMetadataHumongousAllocation | false | {product} | |
bool | TraceMonitorInflation | false | {product} | |
bool | TraceParallelOldGCTasks | false | {product} | |
intx | TraceRedefineClasses | 0 | {product} | |
bool | TraceSafepointCleanupTime | false | {product} | |
bool | TraceSharedLookupCache | false | {product} | |
bool | TraceSuspendWaitFailures | false | {product} | |
intx | TrackedInitializationLimit | 50 | {C2 | product} |
bool | TransmitErrorReport | false | {product} | |
bool | TrapBasedNullChecks | false | {pd | product} |
bool | TrapBasedRangeChecks | false | {C2 | pd |
intx | TypeProfileArgsLimit | 2 | {product} | |
uintx | TypeProfileLevel | 111 | {pd | product} |
intx | TypeProfileMajorReceiverPercent | 90 | {C2 | product} |
intx | TypeProfileParmsLimit | 2 | {product} | |
intx | TypeProfileWidth | 2 | {product} | |
intx | UnguardOnExecutionViolation | 0 | {product} | |
bool | UnlinkSymbolsALot | false | {product} | |
bool | Use486InstrsOnly | false | {ARCH | product} |
bool | UseAES | false | {product} | |
bool | UseAESIntrinsics | false | {product} | |
intx | UseAVX | 99 | {ARCH | product} |
bool | UseAdaptiveGCBoundary | false | {product} | |
bool | UseAdaptiveGenerationSizePolicyAtMajorCollection | true | {product} | |
bool | UseAdaptiveGenerationSizePolicyAtMinorCollection | true | {product} | |
bool | UseAdaptiveNUMAChunkSizing | true | {product} | |
bool | UseAdaptiveSizeDecayMajorGCCost | true | {product} | |
bool | UseAdaptiveSizePolicy | true | {product} | |
bool | UseAdaptiveSizePolicyFootprintGoal | true | {product} | |
bool | UseAdaptiveSizePolicyWithSystemGC | false | {product} | |
bool | UseAddressNop | false | {ARCH | product} |
bool | UseAltSigs | false | {product} | |
bool | UseAutoGCSelectPolicy | false | {product} | |
bool | UseBMI1Instructions | false | {ARCH | product} |
bool | UseBMI2Instructions | false | {ARCH | product} |
bool | UseBiasedLocking | true | {product} | |
bool | UseBimorphicInlining | true | {C2 | product} |
bool | UseBoundThreads | true | {product} | |
bool | UseCLMUL | false | {ARCH | product} |
bool | UseCMSBestFit | true | {product} | |
bool | UseCMSCollectionPassing | true | {product} | |
bool | UseCMSCompactAtFullCollection | true | {product} | |
bool | UseCMSInitiatingOccupancyOnly | false | {product} | |
bool | UseCRC32Intrinsics | false | {product} | |
bool | UseCodeCacheFlushing | true | {product} | |
bool | UseCompiler | true | {product} | |
bool | UseCompilerSafepoints | true | {product} | |
bool | UseCompressedClassPointers | false | {lp64_product} | |
bool | UseCompressedOops | false | {lp64_product} | |
bool | UseConcMarkSweepGC | false | {product} | |
bool | UseCondCardMark | false | {C2 | product} |
bool | UseContainerSupport | true | {product} | |
bool | UseCountLeadingZerosInstruction | false | {ARCH | product} |
bool | UseCountTrailingZerosInstruction | false | {ARCH | product} |
bool | UseCountedLoopSafepoints | false | {C2 | product} |
bool | UseCounterDecay | true | {product} | |
bool | UseDivMod | true | {C2 | product} |
bool | UseDynamicNumberOfGCThreads | false | {product} | |
bool | UseFPUForSpilling | false | {C2 | product} |
bool | UseFastAccessorMethods | true | {product} | |
bool | UseFastEmptyMethods | true | {product} | |
bool | UseFastJNIAccessors | true | {product} | |
bool | UseFastStosb | false | {ARCH | product} |
bool | UseG1GC | false | {product} | |
bool | UseGCLogFileRotation | false | {product} | |
bool | UseGCOverheadLimit | true | {product} | |
bool | UseGCTaskAffinity | false | {product} | |
bool | UseGHASHIntrinsics | false | {product} | |
bool | UseHeavyMonitors | false | {product} | |
bool | UseHugeTLBFS | false | {product} | |
bool | UseInlineCaches | true | {product} | |
bool | UseInterpreter | true | {product} | |
bool | UseJumpTables | true | {C2 | product} |
bool | UseLWPSynchronization | true | {product} | |
bool | UseLargePages | false | {pd | product} |
bool | UseLargePagesInMetaspace | false | {product} | |
bool | UseLargePagesIndividualAllocation | false | {pd | product} |
bool | UseLinuxPosixThreadCPUClocks | true | {product} | |
bool | UseLockedTracing | false | {product} | |
bool | UseLoopCounter | true | {product} | |
bool | UseLoopInvariantCodeMotion | true | {C1 | product} |
bool | UseLoopPredicate | true | {C2 | product} |
bool | UseMathExactIntrinsics | true | {C2 | product} |
bool | UseMaximumCompactionOnSystemGC | true | {product} | |
bool | UseMembar | false | {pd | product} |
bool | UseMontgomeryMultiplyIntrinsic | false | {C2 | product} |
bool | UseMontgomerySquareIntrinsic | false | {C2 | product} |
bool | UseMulAddIntrinsic | false | {C2 | product} |
bool | UseMultiplyToLenIntrinsic | false | {C2 | product} |
bool | UseNUMA | false | {product} | |
bool | UseNUMAInterleaving | false | {product} | |
bool | UseNewLongLShift | false | {ARCH | product} |
bool | UseOSErrorReporting | false | {pd | product} |
bool | UseOldInlining | true | {C2 | product} |
bool | UseOnStackReplacement | true | {pd | product} |
bool | UseOnlyInlinedBimorphic | true | {C2 | product} |
bool | UseOprofile | false | {product} | |
bool | UseOptoBiasInlining | true | {C2 | product} |
bool | UsePSAdaptiveSurvivorSizePolicy | true | {product} | |
bool | UseParNewGC | false | {product} | |
bool | UseParallelGC | false | {product} | |
bool | UseParallelOldGC | false | {product} | |
bool | UsePerfData | true | {product} | |
bool | UsePopCountInstruction | false | {product} | |
bool | UseRDPCForConstantTableBase | false | {C2 | product} |
bool | UseRTMDeopt | false | {ARCH | product} |
bool | UseRTMLocking | false | {ARCH | product} |
bool | UseSHA | false | {product} | |
bool | UseSHA1Intrinsics | false | {product} | |
bool | UseSHA256Intrinsics | false | {product} | |
bool | UseSHA512Intrinsics | false | {product} | |
bool | UseSHM | false | {product} | |
intx | UseSSE | 99 | {product} | |
bool | UseSSE42Intrinsics | false | {product} | |
bool | UseSerialGC | false | {product} | |
bool | UseSharedSpaces | true | {product} | |
bool | UseSignalChaining | true | {product} | |
bool | UseSquareToLenIntrinsic | false | {C2 | product} |
bool | UseStoreImmI16 | true | {ARCH | product} |
bool | UseStringDeduplication | false | {product} | |
bool | UseSuperWord | true | {C2 | product} |
bool | UseTLAB | true | {pd | product} |
bool | UseThreadPriorities | true | {pd | product} |
bool | UseTransparentHugePages | false | {product} | |
bool | UseTypeProfile | true | {product} | |
bool | UseTypeSpeculation | true | {C2 | product} |
bool | UseUnalignedLoadStores | false | {ARCH | product} |
bool | UseVMInterruptibleIO | false | {product} | |
bool | UseXMMForArrayCopy | false | {product} | |
bool | UseXmmI2D | false | {ARCH | product} |
bool | UseXmmI2F | false | {ARCH | product} |
bool | UseXmmLoadAndClearUpper | true | {ARCH | product} |
bool | UseXmmRegToRegMoveAll | false | {ARCH | product} |
bool | VMThreadHintNoPreempt | false | {product} | |
intx | VMThreadPriority | -1 | {product} | |
intx | VMThreadStackSize | 1024 | {pd | product} |
intx | ValueMapInitialSize | 11 | {C1 | product} |
intx | ValueMapMaxLoopSize | 8 | {C1 | product} |
intx | ValueSearchLimit | 1000 | {C2 | product} |
bool | VerifyMergedCPBytecodes | true | {product} | |
bool | VerifySharedSpaces | false | {product} | |
intx | WorkAroundNPTLTimedWaitHang | 1 | {product} | |
uintx | YoungGenerationSizeIncrement | 20 | {product} | |
uintx | YoungGenerationSizeSupplement | 80 | {product} | |
uintx | YoungGenerationSizeSupplementDecay | 8 | {product} | |
uintx | YoungPLABSize | 4096 | {product} | |
bool | ZeroTLAB | false | {product} | |
intx | hashCode | 5 | {product} |
到此这篇关于Java启动参数(-, -X, -XX参数)的使用的文章就介绍到这了,更多相关Java启动参数 内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!