0 序
- 本章对
java命令的使用、最佳实践进行全方位的总结。
1 java命令
1.0 场景：查看版本
- 方法1
# java -version
java version "1.8.0_261"
Java(TM) SE Runtime Environment (build 1.8.0_261-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.261-b12, mixed mode)
- 方法2
# java -XshowSettings:properties -version
Property settings:
awt.toolkit = sun.awt.windows.WToolkit
file.encoding = GBK
file.encoding.pkg = sun.io
file.separator = \
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
java.awt.printerjob = sun.awt.windows.WPrinterJob
java.class.path = .
D:\Program\Java\jdk1.8.0_261\lib\dt.jar
D:\Program\Java\jdk1.8.0_261\lib\tools.jar
java.class.version = 52.0
java.endorsed.dirs = D:\Program\Java\jdk1.8.0_261\jre\lib\endorsed
java.ext.dirs = D:\Program\Java\jdk1.8.0_261\jre\lib\ext
C:\Windows\Sun\Java\lib\ext
java.home = D:\Program\Java\jdk1.8.0_261\jre
java.io.tmpdir = C:\Users\xxxxxx\AppData\Local\Temp\
java.library.path = D:\Program\Java\jdk1.8.0_261\bin
C:\Windows\Sun\Java\bin
C:\Windows\system32
C:\Windows
c:\Users\xxxxxx\AppData\Local\Programs\Cursor\resources\app\bin
C:\Windows\system32
C:\Windows
C:\Windows\System32\Wbem
C:\Windows\System32\WindowsPowerShell\v1.0\
C:\Windows\System32\OpenSSH\
C
\Program Files (x86)\NVIDIA Corporation\PhysX\Common
D:\Program\GNUWin\GnuWin32\bin
D:\Program\Arthas\lib\3.5.2\arthas
D:\Program\Apache-Tomcat\apache-tomcat-8.5.84\bin
C:\Program Files (x86)\Enterprise Vault\EVClient\x64\
D:\Program\WinMerge
C:\Program Files\dotnet\
C:\Users\xxxxxx\AppData\Local\Microsoft\WindowsApps
D:\Program\Java\jdk1.8.0_261\bin
D:\Program\Java\jdk1.8.0_261\jre\bin
D:\Program\git\cmd
D:\Program\IDEA\IDEA 2021.3.1\IntelliJ IDEA 2021.3.1\bin
D:\Program\maven\apache-maven-3.8.1\bin
D:\Program\gradle\gradle-6.8\bin
D:\Program\VSCode\bin
D:\Program\DiffUse
D:\Program\PyCharm\PyCharm2023.2.1\bin
c:\Users\
D:\Program\JMeter\apache-jmeter-5.5\bin
D:\Program\miktex\miktex-24.1\miktex\bin\x64\
D:\Program\nodejs\node-v20.11.1-win-x64
C:\insolu\client001
C:\Users\xxxxxx\AppData\Local\Microsoft\WindowsApps
D:\Program\Java\jdk1.8.0_261\bin
D:\Program\Java\jdk1.8.0_261\jre\bin
D:\Program\git\cmd
D:\Program\IDEA\IDEA 2021.3.1\IntelliJ IDEA 2021.3.1\bin
D:\Program\maven\apache-maven-3.8.1\bin
D:\Program\gradle\gradle-6.8\bin
D:\Program\VSCode\bin
D:\Program\DiffUse
D:\Program\PyCharm\PyCharm2023.2.1\bin
.
java.runtime.name = Java(TM) SE Runtime Environment
java.runtime.version = 1.8.0_261-b12
java.specification.name = Java Platform API Specification
java.specification.vendor = Oracle Corporation
java.specification.version = 1.8
java.vendor = Oracle Corporation
java.vendor.url = http://java.oracle.com/
java.vendor.url.bug = http://bugreport.sun.com/bugreport/
java.version = 1.8.0_261
java.vm.info = mixed mode
java.vm.name = Java HotSpot(TM) 64-Bit Server VM
java.vm.specification.name = Java Virtual Machine Specification
java.vm.specification.vendor = Oracle Corporation
java.vm.specification.version = 1.8
java.vm.vendor = Oracle Corporation
java.vm.version = 25.261-b12
line.separator = \r \n
os.arch = amd64
os.name = Windows 10
os.version = 10.0
path.separator = ;
sun.arch.data.model = 64
sun.boot.class.path = D:\Program\Java\jdk1.8.0_261\jre\lib\resources.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\rt.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\sunrsasign.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\jsse.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\jce.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\charsets.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\jfr.jar
D:\Program\Java\jdk1.8.0_261\jre\classes
sun.boot.library.path = D:\Program\Java\jdk1.8.0_261\jre\bin
sun.cpu.endian = little
sun.cpu.isalist = amd64
sun.desktop = windows
sun.io.unicode.encoding = UnicodeLittle
sun.java.launcher = SUN_STANDARD
sun.jnu.encoding = GBK
sun.management.compiler = HotSpot 64-Bit Tiered Compilers
sun.os.patch.level =
sun.stderr.encoding = ms936
sun.stdout.encoding = ms936
user.country = CN
user.dir = C:\Users\xxxxxx
user.home = C:\Users\xxxxxx
user.language = zh
user.name = xxxxxx
user.script =
user.timezone =
user.variant =
java version "1.8.0_261"
Java(TM) SE Runtime Environment (build 1.8.0_261-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.261-b12, mixed mode)
1.1 场景：判断jdk厂商
- 问题背景
- jdk厂商很多，不同jdk还是有细微差异。这会导致在不同部署环境中，可能会报一些因jdk厂商或jdk版本原因导致的错误（如：cacerts文件，openjdk中是不存在的）。这时知道jdk厂商就很必要了。
- 收费厂商
- Oracle JDK Amazon :
- Amazon Corretto JDK :
- 免费厂商
- OpenJDK : https://github.com/AdoptOpenJDK/openjdk8-upstream-binaries/releases/tag/
- BellSoft Liberica JDK
- Eclipse Temurin
- Red Hat build of OpenJDK : https://developers.redhat.com/products/openjdk/download?onebox=openjdk (需登录注册后，才可下载)
- Microsoft Build of OpenJDK（微软）
- 阿里巴巴 Dragonwell JDK
- 腾讯 Kona JDK
- 华为 毕昇JDK
- 方法1
查看
java.specification.vendor/java.vendor/java.vendor.url/java.vm.vendor/java.vm.specification.vendor字样
# java -XshowSettings:properties -version
Property settings:
awt.toolkit = sun.awt.windows.WToolkit
file.encoding = GBK
file.encoding.pkg = sun.io
file.separator = \
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
java.awt.printerjob = sun.awt.windows.WPrinterJob
java.class.path = .
D:\Program\Java\jdk1.8.0_261\lib\dt.jar
D:\Program\Java\jdk1.8.0_261\lib\tools.jar
java.class.version = 52.0
java.endorsed.dirs = D:\Program\Java\jdk1.8.0_261\jre\lib\endorsed
java.ext.dirs = D:\Program\Java\jdk1.8.0_261\jre\lib\ext
C:\Windows\Sun\Java\lib\ext
java.home = D:\Program\Java\jdk1.8.0_261\jre
java.io.tmpdir = C:\Users\xxxxxx\AppData\Local\Temp\
java.library.path = D:\Program\Java\jdk1.8.0_261\bin
C:\Windows\Sun\Java\bin
C:\Windows\system32
C:\Windows
c:\Users\xxxxxx\AppData\Local\Programs\Cursor\resources\app\bin
C:\Windows\system32
C:\Windows
C:\Windows\System32\Wbem
C:\Windows\System32\WindowsPowerShell\v1.0\
C:\Windows\System32\OpenSSH\
C
\Program Files (x86)\NVIDIA Corporation\PhysX\Common
D:\Program\GNUWin\GnuWin32\bin
D:\Program\Arthas\lib\3.5.2\arthas
D:\Program\Apache-Tomcat\apache-tomcat-8.5.84\bin
C:\Program Files (x86)\Enterprise Vault\EVClient\x64\
D:\Program\WinMerge
C:\Program Files\dotnet\
C:\Users\xxxxxx\AppData\Local\Microsoft\WindowsApps
D:\Program\Java\jdk1.8.0_261\bin
D:\Program\Java\jdk1.8.0_261\jre\bin
D:\Program\git\cmd
D:\Program\IDEA\IDEA 2021.3.1\IntelliJ IDEA 2021.3.1\bin
D:\Program\maven\apache-maven-3.8.1\bin
D:\Program\gradle\gradle-6.8\bin
D:\Program\VSCode\bin
D:\Program\DiffUse
D:\Program\PyCharm\PyCharm2023.2.1\bin
c:\Users\
D:\Program\JMeter\apache-jmeter-5.5\bin
D:\Program\miktex\miktex-24.1\miktex\bin\x64\
D:\Program\nodejs\node-v20.11.1-win-x64
C:\insolu\client001
C:\Users\xxxxxx\AppData\Local\Microsoft\WindowsApps
D:\Program\Java\jdk1.8.0_261\bin
D:\Program\Java\jdk1.8.0_261\jre\bin
D:\Program\git\cmd
D:\Program\IDEA\IDEA 2021.3.1\IntelliJ IDEA 2021.3.1\bin
D:\Program\maven\apache-maven-3.8.1\bin
D:\Program\gradle\gradle-6.8\bin
D:\Program\VSCode\bin
D:\Program\DiffUse
D:\Program\PyCharm\PyCharm2023.2.1\bin
.
java.runtime.name = Java(TM) SE Runtime Environment
java.runtime.version = 1.8.0_261-b12
java.specification.name = Java Platform API Specification
java.specification.vendor = Oracle Corporation
java.specification.version = 1.8
java.vendor = Oracle Corporation
java.vendor.url = http://java.oracle.com/
java.vendor.url.bug = http://bugreport.sun.com/bugreport/
java.version = 1.8.0_261
java.vm.info = mixed mode
java.vm.name = Java HotSpot(TM) 64-Bit Server VM
java.vm.specification.name = Java Virtual Machine Specification
java.vm.specification.vendor = Oracle Corporation
java.vm.specification.version = 1.8
java.vm.vendor = Oracle Corporation
java.vm.version = 25.261-b12
line.separator = \r \n
os.arch = amd64
os.name = Windows 10
os.version = 10.0
path.separator = ;
sun.arch.data.model = 64
sun.boot.class.path = D:\Program\Java\jdk1.8.0_261\jre\lib\resources.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\rt.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\sunrsasign.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\jsse.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\jce.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\charsets.jar
D:\Program\Java\jdk1.8.0_261\jre\lib\jfr.jar
D:\Program\Java\jdk1.8.0_261\jre\classes
sun.boot.library.path = D:\Program\Java\jdk1.8.0_261\jre\bin
sun.cpu.endian = little
sun.cpu.isalist = amd64
sun.desktop = windows
sun.io.unicode.encoding = UnicodeLittle
sun.java.launcher = SUN_STANDARD
sun.jnu.encoding = GBK
sun.management.compiler = HotSpot 64-Bit Tiered Compilers
sun.os.patch.level =
sun.stderr.encoding = ms936
sun.stdout.encoding = ms936
user.country = CN
user.dir = C:\Users\xxxxxx
user.home = C:\Users\xxxxxx
user.language = zh
user.name = xxxxxx
user.script =
user.timezone =
user.variant =
java version "1.8.0_261"
Java(TM) SE Runtime Environment (build 1.8.0_261-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.261-b12, mixed mode)
- 方法2：通过java的图标来进行判别
场景：查看jvm全局参数/启动参数
方法1：java -XX:+PrintFlagsFinal
# java -XX:+PrintFlagsFinal
[Global flags]
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 = false {C2 product}
intx AllocateInstancePrefetchLines = 1 {product}
intx AllocatePrefetchDistance = 192 {product}
intx AllocatePrefetchInstr = 3 {product}
intx AllocatePrefetchLines = 4 {product}
intx AllocatePrefetchStepSize = 64 {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 := 4 {product}
bool CICompilerCountPerCPU = true {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 = 3 {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 product}
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 := 264241152 {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 = 2000 {pd product}
bool InlineSynchronizedMethods = true {C1 product}
bool InsertMemBarAfterArraycopy = true {C2 product}
intx InteriorEntryAlignment = 16 {C2 pd product}
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 product}
uintx LargePageHeapSizeThreshold = 134217728 {product}
uintx LargePageSizeInBytes = 0 {product}
bool LazyBootClassLoader = true {product}
intx LiveNodeCountInliningCutoff = 40000 {C2 product}
bool LogCommercialFeatures = false {product}
intx LoopMaxUnroll = 16 {C2 product}
intx LoopOptsCount = 43 {C2 product}
intx LoopUnrollLimit = 60 {C2 pd product}
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 = 1 {product}
intx MaxBCEAEstimateLevel = 5 {product}
intx MaxBCEAEstimateSize = 150 {product}
uintx MaxDirectMemorySize = 0 {product}
bool MaxFDLimit = true {product}
uintx MaxGCMinorPauseMillis = 4294967295 {product}
uintx MaxGCPauseMillis = 4294967295 {product}
uintx MaxHeapFreeRatio = 100 {manageable}
uintx MaxHeapSize := 4227858432 {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 = 11 {C2 product}
uintx MaxMetaspaceExpansion = 5451776 {product}
uintx MaxMetaspaceFreeRatio = 70 {product}
uintx MaxMetaspaceSize = 4294901760 {product}
uintx MaxNewSize := 1409286144 {product}
intx MaxNodeLimit = 75000 {C2 product}
uint64_t MaxRAM = 0 {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 = 21807104 {pd product}
bool MethodFlushing = true {product}
uintx MinHeapDeltaBytes := 524288 {product}
uintx MinHeapFreeRatio = 0 {manageable}
intx MinInliningThreshold = 250 {product}
intx MinJumpTableSize = 10 {C2 pd product}
uintx MinMetaspaceExpansion = 339968 {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 := 88080384 {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 := 176160768 {product}
bool OmitStackTraceInFastThrow = true {product}
ccstrlist one rror = {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 product}
intx OptoLoopAlignment = 16 {pd product}
bool OptoScheduling = false {C2 pd product}
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 = 8 {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 PreferInterpreterNativeStubs = false {pd product}
intx PrefetchCopyIntervalInBytes = 576 {product}
intx PrefetchFieldsAhead = 1 {product}
intx PrefetchScanIntervalInBytes = 576 {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 := true {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 = 251658240 {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 product}
intx SafepointSpinBeforeYield = 2000 {product}
bool SafepointTimeout = false {product}
intx SafepointTimeoutDelay = 10000 {product}
bool ScavengeBeforeFullGC = true {product}
intx SelfDestructTimer = 0 {product}
uintx SharedBaseAddress = 0 {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 = 6 {pd product}
bool StackTraceInThrowable = true {product}
intx StackYellowPages = 3 {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 = 0 {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 product}
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 = true {product}
bool UseAESCTRIntrinsics = true {product}
bool UseAESIntrinsics = true {product}
intx UseAVX = 2 {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 = true {ARCH product}
bool UseAltSigs = false {product}
bool UseAutoGCSelectPolicy = false {product}
bool UseBMI1Instructions = true {ARCH product}
bool UseBMI2Instructions = true {ARCH product}
bool UseBiasedLocking = true {product}
bool UseBimorphicInlining = true {C2 product}
bool UseBoundThreads = true {product}
bool UseCLMUL = true {ARCH product}
bool UseCMSBestFit = true {product}
bool UseCMSCollectionPassing = true {product}
bool UseCMSCompactAtFullCollection = true {product}
bool UseCMSInitiatingOccupancyOnly = false {product}
bool UseCRC32Intrinsics = true {product}
bool UseCodeCacheFlushing = true {product}
bool UseCompiler = true {product}
bool UseCompilerSafepoints = true {product}
bool UseCompressedClassPointers := true {lp64_product}
bool UseCompressedOops := true {lp64_product}
bool UseConcMarkSweepGC = false {product}
bool UseCondCardMark = false {C2 product}
bool UseCountLeadingZerosInstruction = true {ARCH product}
bool UseCountTrailingZerosInstruction = true {ARCH product}
bool UseCountedLoopSafepoints = false {C2 product}
bool UseCounterDecay = true {product}
bool UseDivMod = true {C2 product}
bool UseDynamicNumberOfGCThreads = false {product}
bool UseFPUForSpilling = true {C2 product}
bool UseFastAccessorMethods = false {product}
bool UseFastEmptyMethods = false {product}
bool UseFastJNIAccessors = true {product}
bool UseFastStosb = true {ARCH product}
bool UseG1GC = false {product}
bool UseGCLogFileRotation = false {product}
bool UseGCOverheadLimit = true {product}
bool UseGCTaskAffinity = false {product}
bool UseGHASHIntrinsics = true {product}
bool UseHeavyMonitors = 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 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 = true {C2 product}
bool UseMontgomerySquareIntrinsic = true {C2 product}
bool UseMulAddIntrinsic = true {C2 product}
bool UseMultiplyToLenIntrinsic = true {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 UseOptoBiasInlining = true {C2 product}
bool UsePSAdaptiveSurvivorSizePolicy = true {product}
bool UseParNewGC = false {product}
bool UseParallelGC := true {product}
bool UseParallelOldGC = true {product}
bool UsePerfData = true {product}
bool UsePopCountInstruction = true {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}
intx UseSSE = 4 {product}
bool UseSSE42Intrinsics = true {product}
bool UseSerialGC = false {product}
bool UseSharedSpaces = false {product}
bool UseSignalChaining = true {product}
bool UseSquareToLenIntrinsic = true {C2 product}
bool UseStoreImmI16 = false {ARCH product}
bool UseStringDeduplication = false {product}
bool UseSuperWord = true {C2 product}
bool UseTLAB = true {pd product}
bool UseThreadPriorities = true {pd product}
bool UseTypeProfile = true {product}
bool UseTypeSpeculation = true {C2 product}
bool UseUTCFileTimestamp = true {product}
bool UseUnalignedLoadStores = true {ARCH product}
bool UseVMInterruptibleIO = false {product}
bool UseXMMForArrayCopy = true {product}
bool UseXmmI2D = false {ARCH product}
bool UseXmmI2F = false {ARCH product}
bool UseXmmLoadAndClearUpper = true {ARCH product}
bool UseXmmRegToRegMoveAll = true {ARCH product}
bool VMThreadHintNoPreempt = false {product}
intx VMThreadPriority = -1 {product}
intx VMThreadStackSize = 0 {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}
用法: java [-options] class [args...]
(执行类)
或 java [-options] -jar jarfile [args...]
(执行 jar 文件)
其中选项包括:
-d32 使用 32 位数据模型 (如果可用)
-d64 使用 64 位数据模型 (如果可用)
-server 选择 "server" VM
默认 VM 是 server.
-cp <目录和 zip/jar 文件的类搜索路径>
-classpath <目录和 zip/jar 文件的类搜索路径>
用 ; 分隔的目录, JAR 档案
和 ZIP 档案列表, 用于搜索类文件。
-D<名称>=<值>
设置系统属性
-verbose:[class|gc|jni]
启用详细输出
-version 输出产品版本并退出
-version:<值>
警告: 此功能已过时, 将在
未来发行版中删除。
需要指定的版本才能运行
-showversion 输出产品版本并继续
-jre-restrict-search | -no-jre-restrict-search
警告: 此功能已过时, 将在
未来发行版中删除。
在版本搜索中包括/排除用户专用 JRE
-? -help 输出此帮助消息
-X 输出非标准选项的帮助
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
按指定的粒度启用断言
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
禁用具有指定粒度的断言
-esa | -enablesystemassertions
启用系统断言
-dsa | -disablesystemassertions
禁用系统断言
-agentlib:<libname>[=<选项>]
加载本机代理库 <libname>, 例如 -agentlib:hprof
另请参阅 -agentlib:jdwp=help 和 -agentlib:hprof=help
-agentpath:<pathname>[=<选项>]
按完整路径名加载本机代理库
-javaagent:<jarpath>[=<选项>]
加载 Java 编程语言代理, 请参阅 java.lang.instrument
-splash:<imagepath>
使用指定的图像显示启动屏幕
有关详细信息, 请参阅 http://www.oracle.com/technetwork/java/javase/documentation/index.html。
方法2：jinfo <PID>
jinfo 15648
Attaching to process ID 15648, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.261-b12
Java System Properties:
idea.version = 2023.2.2
java.runtime.name = Java(TM) SE Runtime Environment
java.vm.version = 25.261-b12
sun.boot.library.path = D:\Program\Java\jdk1.8.0_261\jre\bin
java.vendor.url = http://java.oracle.com/
java.vm.vendor = Oracle Corporation
maven.multiModuleProjectDirectory = E:\source_code\BigData\bdp_common_data_service
path.separator = ;
guice.disable.misplaced.annotation.check = true
file.encoding.pkg = sun.io
java.vm.name = Java HotSpot(TM) 64-Bit Server VM
sun.os.patch.level =
sun.java.launcher = SUN_STANDARD
user.script =
user.country = CN
user.dir = E:\source_code\BigData\bdp_common_data_service
java.vm.specification.name = Java Virtual Machine Specification
java.runtime.version = 1.8.0_261-b12
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
os.arch = amd64
java.endorsed.dirs = D:\Program\Java\jdk1.8.0_261\jre\lib\endorsed
line.separator =
java.io.tmpdir = C:\Users\xxxxxx\AppData\Local\Temp\
java.vm.specification.vendor = Oracle Corporation
idea.maven.embedder.version = 3.8.1
user.variant =
os.name = Windows 10
maven.defaultProjectBuilder.disableGlobalModelCache = true
maven.ext.class.path = D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven-event-listener.jar
sun.jnu.encoding = GBK
java.library.path = D:\Program\Java\jdk1.8.0_261\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;c:\Users\xxxxxx\AppData\Local\Programs\Cursor\resources\app\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\DFSK 云盘;C;\Program Files (x86)\NVIDIA Corporation\PhysX\Common;D:\Program\influxdb\influxdb-1.8.4-1;D:\Program\nacos\nacos-server-2.0.3\nacos\bin;D:\Program\ActiveMQ\apache-artemis-2.19.1\bin;D:\Program\Neo4j\neo4j-community-3.5.35\bin;D:\Program\GNUWin\GnuWin32\bin;D:\Program\Arthas\lib\3.5.2\arthas;D:\Program\Apache-Tomcat\apache-tomcat-8.5.84\bin;C:\Program Files (x86)\Enterprise Vault\EVClient\x64\;D:\Program\WinMerge;C:\Program Files\dotnet\;C:\Users\xxxxxx\AppData\Local\Microsoft\WindowsApps;D:\Program\Java\jdk1.8.0_261\bin;D:\Program\Java\jdk1.8.0_261\jre\bin;D:\Program\git\cmd;D:\Program\IDEA\IDEA 2021.3.1\IntelliJ IDEA 2021.3.1\bin;D:\Program\maven\apache-maven-3.8.1\bin;D:\Program\gradle\gradle-6.8\bin;D:\Program\VSCode\bin;D:\Program\DiffUse;D:\Program\PyCharm\PyCharm2023.2.1\bin;c:\Users\;D:\Program\JMeter\apache-jmeter-5.5\bin;D:\Program\miktex\miktex-24.1\miktex\bin\x64\;D:\Program\nodejs\node-v20.11.1-win-x64;C:\insolu\client001;C:\Users\xxxxxx\AppData\Local\Microsoft\WindowsApps;D:\Program\Java\jdk1.8.0_261\bin;D:\Program\Java\jdk1.8.0_261\jre\bin;D:\Program\git\cmd;D:\Program\IDEA\IDEA 2021.3.1\IntelliJ IDEA 2021.3.1\bin;;D:\Program\maven\apache-maven-3.8.1\bin;D:\Program\gradle\gradle-6.8\bin;D:\Program\VSCode\bin;D:\Program\DiffUse;D:\Program\PyCharm\PyCharm2023.2.1\bin;;D:\Program\netcat;;.
java.class.version = 52.0
java.specification.name = Java Platform API Specification
sun.management.compiler = HotSpot 64-Bit Tiered Compilers
maven.repo.local = D:\Program_Data\maven_repository
os.version = 10.0
user.home = C:\Users\xxxxxx
user.timezone = Asia/Shanghai
java.awt.printerjob = sun.awt.windows.WPrinterJob
file.encoding = GBK
java.specification.version = 1.8
java.rmi.server.disableHttp = true
user.name = xxxxxx
java.class.path = D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven-model\lib\maven-model.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven-server\lib\maven-server.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server-common.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server-lib\archetype-catalog-2.2.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server-lib\archetype-common-2.2.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server-lib\archetype-descriptor-2.2.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server-lib\lucene-core-2.4.1.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server-lib\maven-dependency-tree-1.2.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server-lib\nexus-indexer-3.0.4.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server-lib\nexus-indexer-artifact-1.0.1.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven3-server.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven36-server.jar;D:\Program\maven\apache-maven-3.8.1\lib\cdi-api-1.0.jar;D:\Program\maven\apache-maven-3.8.1\lib\commons-cli-1.4.jar;D:\Program\maven\apache-maven-3.8.1\lib\commons-io-2.5.jar;D:\Program\maven\apache-maven-3.8.1\lib\commons-lang3-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\guava-25.1-android.jar;D:\Program\maven\apache-maven-3.8.1\lib\guice-4.2.1-no_aop.jar;D:\Program\maven\apache-maven-3.8.1\lib\jansi-1.17.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\javax.inject-1.jar;D:\Program\maven\apache-maven-3.8.1\lib\jcl-over-slf4j-1.7.29.jar;D:\Program\maven\apache-maven-3.8.1\lib\jsoup-1.12.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\jsr250-api-1.0.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-artifact-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-builder-support-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-compat-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-core-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-embedder-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-model-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-model-builder-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-plugin-api-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-repository-metadata-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-resolver-api-1.6.2.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-resolver-connector-basic-1.6.2.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-resolver-impl-1.6.2.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-resolver-provider-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-resolver-spi-1.6.2.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-resolver-transport-wagon-1.6.2.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-resolver-util-1.6.2.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-settings-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-settings-builder-3.8.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\maven-shared-utils-3.2.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\org.eclipse.sisu.inject-0.3.4.jar;D:\Program\maven\apache-maven-3.8.1\lib\org.eclipse.sisu.plexus-0.3.4.jar;D:\Program\maven\apache-maven-3.8.1\lib\plexus-cipher-1.7.jar;D:\Program\maven\apache-maven-3.8.1\lib\plexus-component-annotations-2.1.0.jar;D:\Program\maven\apache-maven-3.8.1\lib\plexus-interpolation-1.25.jar;D:\Program\maven\apache-maven-3.8.1\lib\plexus-sec-dispatcher-1.4.jar;D:\Program\maven\apache-maven-3.8.1\lib\plexus-utils-3.2.1.jar;D:\Program\maven\apache-maven-3.8.1\lib\slf4j-api-1.7.29.jar;D:\Program\maven\apache-maven-3.8.1\lib\wagon-file-3.4.3.jar;D:\Program\maven\apache-maven-3.8.1\lib\wagon-http-3.4.3-shaded.jar;D:\Program\maven\apache-maven-3.8.1\lib\wagon-provider-api-3.4.3.jar;D:\Program\maven\apache-maven-3.8.1\boot\plexus-classworlds-2.6.0.jar;D:\Program\maven\apache-maven-3.8.1\boot\plexus-classworlds.license;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\lib\util_rt.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\lib\annotations.jar;D:\Program\IDEA\IDEA_COMMUNITY_2023.2\lib\util-8.jar
java.naming.factory.initial = com.intellij.execution.rmi.RemoteServer$Jndi
java.vm.specification.version = 1.8
sun.arch.data.model = 64
sun.java.command = org.jetbrains.idea.maven.server.RemoteMavenServer36
java.home = D:\Program\Java\jdk1.8.0_261\jre
user.language = zh
java.specification.vendor = Oracle Corporation
awt.toolkit = sun.awt.windows.WToolkit
java.vm.info = mixed mode
java.version = 1.8.0_261
java.ext.dirs = D:\Program\Java\jdk1.8.0_261\jre\lib\ext;C:\Windows\Sun\Java\lib\ext
sun.boot.class.path = D:\Program\Java\jdk1.8.0_261\jre\lib\resources.jar;D:\Program\Java\jdk1.8.0_261\jre\lib\rt.jar;D:\Program\Java\jdk1.8.0_261\jre\lib\sunrsasign.jar;D:\Program\Java\jdk1.8.0_261\jre\lib\jsse.jar;D:\Program\Java\jdk1.8.0_261\jre\lib\jce.jar;D:\Program\Java\jdk1.8.0_261\jre\lib\charsets.jar;D:\Program\Java\jdk1.8.0_261\jre\lib\jfr.jar;D:\Program\Java\jdk1.8.0_261\jre\classes
java.awt.headless = true
java.vendor = Oracle Corporation
maven.home = D:\Program\maven\apache-maven-3.8.1
file.separator = \
java.vendor.url.bug = http://bugreport.sun.com/bugreport/
apple.awt.UIElement = true
sun.io.unicode.encoding = UnicodeLittle
sun.cpu.endian = little
java.rmi.server.hostname = 127.0.0.1
sun.desktop = windows
sun.cpu.isalist = amd64
VM Flags:
Non-default VM flags: -XX:CICompilerCount=4 -XX:InitialHeapSize=264241152 -XX:MaxHeapSize=805306368 -XX:MaxNewSize=268435456 -XX:MinHeapDeltaBytes=524288 -XX:NewSize=88080384 -XX:OldSize=176160768 -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:+UseFastUnorderedTimeStamps -XX:-UseLargePagesIndividualAllocation -XX:+UseParallelGC
Command line: -Djava.awt.headless=true -Dmaven.defaultProjectBuilder.disableGlobalModelCache=true -Didea.version=2023.2.2 -Didea.maven.embedder.version=3.8.1 -Xmx768m -Dmaven.ext.class.path=D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven-event-listener.jar -Dfile.encoding=GBK
方法3：jps -v
# jps -v
jps -v
15648 RemoteMavenServer36 -Djava.awt.headless=true -Dmaven.defaultProjectBuilder.disableGlobalModelCache=true -Didea.version=2023.2.2 -Didea.maven.embedder.version=3.8.1 -Xmx768m -Dmaven.ext.class.path=D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven-event-listener.jar -Dfile.encoding=GBK
18928 Jps -Denv.class.path=.;D:\Program\Java\jdk1.8.0_261\lib\dt.jar;D:\Program\Java\jdk1.8.0_261\lib\tools.jar; -Dapplication.home=D:\Program\Java\jdk1.8.0_261 -Xms8m
19328 exit -XX:ErrorFile=C:\Users\xxxxxx\\java_error_in_idea64_%p.log -XX:HeapDumpPath=C:\Users\xxxxxx\\java_error_in_idea64.hprof -Xms128m -Xmx2048m -XX:ReservedCodeCacheSize=512m -XX:+UseG1GC -XX:SoftRefLRUPolicyMSPerMB=50 -XX:CICompilerCount=2 -XX:+HeapDumpOnOutOfMemoryError -XX:-OmitStackTraceInFastThrow -XX:+IgnoreUnrecognizedVMOptions -XX:CompileCommand=exclude,com/intellij/openapi/vfs/impl/FilePartNodeRoot,trieDescend -ea -Dsun.io.useCanonCaches=false -Dsun.java2d.metal=true -Djbr.catch.SIGABRT=true -Djdk.http.auth.tunneling.disabledSchemes="" -Djdk.attach.allowAttachSelf=true -Djdk.module.illegalAccess.silent=true -Dkotlinx.coroutines.debug=off -Xmx2048m -Djb.vmOptionsFile=C:\Users\xxxxxx\AppData\Roaming\\JetBrains\\IdeaIC2023.2\idea64.exe.vmoptions -Djava.system.class.loader=com.intellij.util.lang.PathClassLoader -Didea.vendor.name=JetBrains -Didea.paths.selector=IdeaIC2023.2 -Djna.boot.library.path=D:\Program\IDEA\IDEA_COMMUNITY_2023.2/lib/jna/amd64 -Dpty4j.preferred.native.folder=D:\Program\IDEA\IDEA_COM
6416 RemoteMavenServer36 -Djava.awt.headless=true -Dmaven.defaultProjectBuilder.disableGlobalModelCache=true -Didea.version=2023.2.2 -Didea.maven.embedder.version=3.8.1 -Xmx768m -Dmaven.ext.class.path=D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven-event-listener.jar -Dfile.encoding=GBK
2324 RemoteMavenServer36 -Djava.awt.headless=true -Dmaven.defaultProjectBuilder.disableGlobalModelCache=true -Didea.version=2023.2.2 -Didea.maven.embedder.version=3.8.1 -Xmx768m -Dmaven.ext.class.path=D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven-event-listener.jar -Dfile.encoding=GBK
2524 RemoteMavenServer36 -Djava.awt.headless=true -Dmaven.defaultProjectBuilder.disableGlobalModelCache=true -Didea.version=2023.2.2 -Didea.maven.embedder.version=3.8.1 -Xmx768m -Dmaven.ext.class.path=D:\Program\IDEA\IDEA_COMMUNITY_2023.2\plugins\maven\lib\maven-event-listener.jar -Dfile.encoding=GBK