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| <li class="md-nav__item"> |
| <a href="../tool_jmap/" title="Java memory map (jmap) tool" class="md-nav__link"> |
| Java memory map (jmap) tool |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../tool_jps/" title="Java process status (jps)" class="md-nav__link"> |
| Java process status (jps) |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../tool_jstack/" title="Java stack (jstack) tool" class="md-nav__link"> |
| Java stack (jstack) tool |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../tool_migration/" title="Switching to OpenJ9" class="md-nav__link"> |
| Switching to OpenJ9 |
| </a> |
| </li> |
| |
| |
| </ul> |
| </nav> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item md-nav__item--nested"> |
| |
| <input class="md-toggle md-nav__toggle" data-md-toggle="nav-10-4" type="checkbox" id="nav-10-4"> |
| |
| <label class="md-nav__link" for="nav-10-4"> |
| Interfaces |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-10-4"> |
| Interfaces |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../interface_jvmti/" title="JVMTI" class="md-nav__link"> |
| JVMTI |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../interface_dtfj/" title="DTFJ" class="md-nav__link"> |
| DTFJ |
| </a> |
| </li> |
| |
| |
| </ul> |
| </nav> |
| </li> |
| |
| |
| </ul> |
| </nav> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item md-nav__item--active md-nav__item--nested"> |
| |
| <input class="md-toggle md-nav__toggle" data-md-toggle="nav-11" type="checkbox" id="nav-11" checked> |
| |
| <label class="md-nav__link" for="nav-11"> |
| Command-line options |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> |
| <label class="md-nav__title" for="nav-11"> |
| Command-line options |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../cmdline_specifying/" title="Specifying options" class="md-nav__link"> |
| Specifying options |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../cmdline_general/" title="Standard options" class="md-nav__link"> |
| Standard options |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../cmdline_migration/" title="Switching to OpenJ9" class="md-nav__link"> |
| Switching to OpenJ9 |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item md-nav__item--nested"> |
| |
| <input class="md-toggle md-nav__toggle" data-md-toggle="nav-11-4" type="checkbox" id="nav-11-4"> |
| |
| <label class="md-nav__link" for="nav-11-4"> |
| System property options |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-11-4"> |
| System property options |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../d_jvm_commands/" title="Using System properties" class="md-nav__link"> |
| Using System properties |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmenableclasscaching/" title="-Dcom.ibm.enableClassCaching" class="md-nav__link"> |
| -Dcom.ibm.enableClassCaching |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmenablelegacydumpsecurity/" title="-Dcom.ibm.enableLegacyDumpSecurity" class="md-nav__link"> |
| -Dcom.ibm.enableLegacyDumpSecurity |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmenablelegacylogsecurity/" title="-Dcom.ibm.enableLegacyLogSecurity" class="md-nav__link"> |
| -Dcom.ibm.enableLegacyLogSecurity |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmenablelegacytracesecurity/" title="-Dcom.ibm.enableLegacyTraceSecurity" class="md-nav__link"> |
| -Dcom.ibm.enableLegacyTraceSecurity |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmgpudisable/" title="-Dcom.ibm.gpu.disable" class="md-nav__link"> |
| -Dcom.ibm.gpu.disable |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmgpuenable/" title="-Dcom.ibm.gpu.enable" class="md-nav__link"> |
| -Dcom.ibm.gpu.enable |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmgpuverbose/" title="-Dcom.ibm.gpu.verbose" class="md-nav__link"> |
| -Dcom.ibm.gpu.verbose |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmlangmanagementosmxbeaniscputime100ns/" title="-Dcom.ibm.lang.management.OperatingSystemMXBean.isCpuTime100ns" class="md-nav__link"> |
| -Dcom.ibm.lang.management.OperatingSystemMXBean.isCpuTime100ns |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmlangmanagementverbose/" title="-Dcom.ibm.lang.management.verbose" class="md-nav__link"> |
| -Dcom.ibm.lang.management.verbose |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmtoolsattachdirectory/" title="-Dcom.ibm.tools.attach.directory" class="md-nav__link"> |
| -Dcom.ibm.tools.attach.directory |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmtoolsattachdisplayname/" title="-Dcom.ibm.tools.attach.displayName" class="md-nav__link"> |
| -Dcom.ibm.tools.attach.displayName |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmtoolsattachenable/" title="-Dcom.ibm.tools.attach.enable" class="md-nav__link"> |
| -Dcom.ibm.tools.attach.enable |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmtoolsattachid/" title="-Dcom.ibm.tools.attach.id" class="md-nav__link"> |
| -Dcom.ibm.tools.attach.id |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dcomibmtoolsattachtimeout/" title="-Dcom.ibm.tools.attach.timeout" class="md-nav__link"> |
| -Dcom.ibm.tools.attach.timeout |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../dfileencoding/" title="-Dfile.encoding" class="md-nav__link"> |
| -Dfile.encoding |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../djavacompiler/" title="-Djava.compiler" class="md-nav__link"> |
| -Djava.compiler |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../djdknativecbc/" title="-Djdk.nativeCBC" class="md-nav__link"> |
| -Djdk.nativeCBC |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../djdknativechacha20/" title="-Djdk.nativeChaCha20" class="md-nav__link"> |
| -Djdk.nativeChaCha20 |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../djdknativecrypto/" title="-Djdk.nativeCrypto" class="md-nav__link"> |
| -Djdk.nativeCrypto |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../djdknativedigest/" title="-Djdk.nativeDigest" class="md-nav__link"> |
| -Djdk.nativeDigest |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../djdknativegcm/" title="-Djdk.nativeGCM" class="md-nav__link"> |
| -Djdk.nativeGCM |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../djdknativersa/" title="-Djdk.nativeRSA" class="md-nav__link"> |
| -Djdk.nativeRSA |
| </a> |
| </li> |
| |
| |
| </ul> |
| </nav> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item md-nav__item--active md-nav__item--nested"> |
| |
| <input class="md-toggle md-nav__toggle" data-md-toggle="nav-11-5" type="checkbox" id="nav-11-5" checked> |
| |
| <label class="md-nav__link" for="nav-11-5"> |
| JVM -X options |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-11-5"> |
| JVM -X options |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../x_jvm_commands/" title="Using -X options" class="md-nav__link"> |
| Using -X options |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../x/" title="-X" class="md-nav__link"> |
| -X |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xaggressive/" title="-Xaggressive" class="md-nav__link"> |
| -Xaggressive |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xalwaysclassgc/" title="-Xalwaysclassgc" class="md-nav__link"> |
| -Xalwaysclassgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xaot/" title="-Xaot" class="md-nav__link"> |
| -Xaot |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xargencoding/" title="-Xargencoding" class="md-nav__link"> |
| -Xargencoding |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xbootclasspath/" title="-Xbootclasspath" class="md-nav__link"> |
| -Xbootclasspath |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xceehdlr/" title="-XCEEHDLR" class="md-nav__link"> |
| -XCEEHDLR |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcheck/" title="-Xcheck" class="md-nav__link"> |
| -Xcheck |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xclassgc/" title="-Xclassgc" class="md-nav__link"> |
| -Xclassgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcodecache/" title="-Xcodecache" class="md-nav__link"> |
| -Xcodecache |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcodecachetotal/" title="-Xcodecachetotal" class="md-nav__link"> |
| -Xcodecachetotal |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcomp/" title="-Xcomp" class="md-nav__link"> |
| -Xcomp |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcompactexplicitgc/" title="-Xcompactexplicitgc" class="md-nav__link"> |
| -Xcompactexplicitgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcompactgc/" title="-Xcompactgc" class="md-nav__link"> |
| -Xcompactgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcompilationthreads/" title="-XcompilationThreads" class="md-nav__link"> |
| -XcompilationThreads |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcompressedrefs/" title="-Xcompressedrefs" class="md-nav__link"> |
| -Xcompressedrefs |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xconcurrentbackground/" title="-Xconcurrentbackground" class="md-nav__link"> |
| -Xconcurrentbackground |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xconcurrentlevel/" title="-Xconcurrentlevel" class="md-nav__link"> |
| -Xconcurrentlevel |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xconcurrentslack/" title="-Xconcurrentslack" class="md-nav__link"> |
| -Xconcurrentslack |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xconmeter/" title="-Xconmeter" class="md-nav__link"> |
| -Xconmeter |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xenableexcessivegc/" title="-Xdisableexcessivegc" class="md-nav__link"> |
| -Xdisableexcessivegc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xenableexplicitgc/" title="-Xdisableexplicitgc" class="md-nav__link"> |
| -Xdisableexplicitgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xdisablejavadump/" title="-Xdisablejavadump" class="md-nav__link"> |
| -Xdisablejavadump |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xenablestringconstantgc/" title="-Xdisablestringconstantgc" class="md-nav__link"> |
| -Xdisablestringconstantgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xdump/" title="-Xdump" class="md-nav__link"> |
| -Xdump |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xenableexcessivegc/" title="-Xenableexcessivegc" class="md-nav__link"> |
| -Xenableexcessivegc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xenableexplicitgc/" title="-Xenableexplicitgc" class="md-nav__link"> |
| -Xenableexplicitgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xenablestringconstantgc/" title="-Xenablestringconstantgc" class="md-nav__link"> |
| -Xenablestringconstantgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xfastresolve/" title="-Xfastresolve" class="md-nav__link"> |
| -Xfastresolve |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xfuture/" title="-Xfuture" class="md-nav__link"> |
| -Xfuture |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xgc/" title="-Xgc" class="md-nav__link"> |
| -Xgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item md-nav__item--active"> |
| |
| <input class="md-toggle md-nav__toggle" data-md-toggle="toc" type="checkbox" id="__toc"> |
| |
| |
| |
| |
| <label class="md-nav__link md-nav__link--active" for="__toc"> |
| -Xgc:splitheap |
| </label> |
| |
| <a href="./" title="-Xgc:splitheap" class="md-nav__link md-nav__link--active"> |
| -Xgc:splitheap |
| </a> |
| |
| |
| <nav class="md-nav md-nav--secondary"> |
| |
| |
| |
| |
| |
| <label class="md-nav__title" for="__toc">On this page ...</label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| <li class="md-nav__item"> |
| <a href="#syntax" class="md-nav__link"> |
| Syntax |
| </a> |
| |
| </li> |
| |
| <li class="md-nav__item"> |
| <a href="#explanation" class="md-nav__link"> |
| Explanation |
| </a> |
| |
| </li> |
| |
| |
| |
| |
| |
| </ul> |
| |
| </nav> |
| |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xgcpolicy/" title="-Xgcpolicy" class="md-nav__link"> |
| -Xgcpolicy |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xgcthreads/" title="-Xgcthreads" class="md-nav__link"> |
| -Xgcthreads |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xgcworkpackets/" title="-Xgcworkpackets" class="md-nav__link"> |
| -Xgcworkpackets |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xifa/" title="-Xifa" class="md-nav__link"> |
| -Xifa |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xint/" title="-Xint" class="md-nav__link"> |
| -Xint |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xss/" title="-Xiss" class="md-nav__link"> |
| -Xiss |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xjit/" title="-Xjit" class="md-nav__link"> |
| -Xjit |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xjni/" title="-Xjni" class="md-nav__link"> |
| -Xjni |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xlinenumbers/" title="-Xlinenumbers" class="md-nav__link"> |
| -Xlinenumbers |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xloa/" title="-Xloa" class="md-nav__link"> |
| -Xloa |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xloaminimum/" title="-Xloainitial" class="md-nav__link"> |
| -Xloainitial |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xloaminimum/" title="-Xloamaximum" class="md-nav__link"> |
| -Xloamaximum |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xloaminimum/" title="-Xloaminimum" class="md-nav__link"> |
| -Xloaminimum |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xlockreservation/" title="-XlockReservation" class="md-nav__link"> |
| -XlockReservation |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xlockword/" title="-Xlockword" class="md-nav__link"> |
| -Xlockword |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xlog/" title="-Xlog" class="md-nav__link"> |
| -Xlog |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xlp/" title="-Xlp" class="md-nav__link"> |
| -Xlp |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xlpcodecache/" title="-Xlp:codecache" class="md-nav__link"> |
| -Xlp:codecache |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xlpobjectheap/" title="-Xlp:objectheap" class="md-nav__link"> |
| -Xlp:objectheap |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmine/" title="-Xmaxe" class="md-nav__link"> |
| -Xmaxe |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xminf/" title="-Xmaxf" class="md-nav__link"> |
| -Xmaxf |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmint/" title="-Xmaxt" class="md-nav__link"> |
| -Xmaxt |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmca/" title="-Xmca" class="md-nav__link"> |
| -Xmca |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmca/" title="-Xmco" class="md-nav__link"> |
| -Xmco |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmcrs/" title="-Xmcrs" class="md-nav__link"> |
| -Xmcrs |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmine/" title="-Xmine" class="md-nav__link"> |
| -Xmine |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xminf/" title="-Xminf" class="md-nav__link"> |
| -Xminf |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmint/" title="-Xmint" class="md-nav__link"> |
| -Xmint |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmn/" title="-Xmn" class="md-nav__link"> |
| -Xmn |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmn/" title="-Xmns" class="md-nav__link"> |
| -Xmns |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmn/" title="-Xmnx" class="md-nav__link"> |
| -Xmnx |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmo/" title="-Xmo" class="md-nav__link"> |
| -Xmo |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmo/" title="-Xmoi" class="md-nav__link"> |
| -Xmoi |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmo/" title="-Xmos" class="md-nav__link"> |
| -Xmos |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmo/" title="-Xmox" class="md-nav__link"> |
| -Xmox |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmr/" title="-Xmr" class="md-nav__link"> |
| -Xmr |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmr/" title="-Xmrx" class="md-nav__link"> |
| -Xmrx |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xms/" title="-Xms" class="md-nav__link"> |
| -Xms |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xmso/" title="-Xmso" class="md-nav__link"> |
| -Xmso |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xms/" title="-Xmx" class="md-nav__link"> |
| -Xmx |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xaot/" title="-Xnoaot" class="md-nav__link"> |
| -Xnoaot |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xclassgc/" title="-Xnoclassgc" class="md-nav__link"> |
| -Xnoclassgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcompactexplicitgc/" title="-Xnocompactexplicitgc" class="md-nav__link"> |
| -Xnocompactexplicitgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcompactgc/" title="-Xnocompactgc" class="md-nav__link"> |
| -Xnocompactgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xcompressedrefs/" title="-Xnocompressedrefs" class="md-nav__link"> |
| -Xnocompressedrefs |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xjit/" title="-Xnojit" class="md-nav__link"> |
| -Xnojit |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xlinenumbers/" title="-Xnolinenumbers" class="md-nav__link"> |
| -Xnolinenumbers |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xloa/" title="-Xnoloa" class="md-nav__link"> |
| -Xnoloa |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xsigcatch/" title="-Xnosigcatch" class="md-nav__link"> |
| -Xnosigcatch |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xsigchain/" title="-Xnosigchain" class="md-nav__link"> |
| -Xnosigchain |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xnumanone/" title="-Xnuma:none" class="md-nav__link"> |
| -Xnuma:none |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xoptionsfile/" title="-Xoptionsfile" class="md-nav__link"> |
| -Xoptionsfile |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xquickstart/" title="-Xquickstart" class="md-nav__link"> |
| -Xquickstart |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xrs/" title="-Xrs" class="md-nav__link"> |
| -Xrs |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xsamplingexpirationtime/" title="-XsamplingExpirationTime" class="md-nav__link"> |
| -XsamplingExpirationTime |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xscdmx/" title="-Xscdmx" class="md-nav__link"> |
| -Xscdmx |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xscminaot/" title="-Xscmaxaot" class="md-nav__link"> |
| -Xscmaxaot |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xscminjitdata/" title="-Xscmaxjitdata" class="md-nav__link"> |
| -Xscmaxjitdata |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xscminaot/" title="-Xscminaot" class="md-nav__link"> |
| -Xscminaot |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xscminjitdata/" title="-Xscminjitdata" class="md-nav__link"> |
| -Xscminjitdata |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xscmx/" title="-Xscmx" class="md-nav__link"> |
| -Xscmx |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xshareclasses/" title="-Xshareclasses" class="md-nav__link"> |
| -Xshareclasses |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xsigcatch/" title="-Xsigcatch" class="md-nav__link"> |
| -Xsigcatch |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xsigchain/" title="-Xsigchain" class="md-nav__link"> |
| -Xsigchain |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xsignal/" title="-Xsignal" class="md-nav__link"> |
| -Xsignal |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xsoftmx/" title="-Xsoftmx" class="md-nav__link"> |
| -Xsoftmx |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xsoftrefthreshold/" title="-Xsoftrefthreshold" class="md-nav__link"> |
| -Xsoftrefthreshold |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xss/" title="-Xss" class="md-nav__link"> |
| -Xss |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xss/" title="-Xssi" class="md-nav__link"> |
| -Xssi |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xtgc/" title="-Xtgc" class="md-nav__link"> |
| -Xtgc |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xthr/" title="-Xthr" class="md-nav__link"> |
| -Xthr |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xtlhprefetch/" title="-XtlhPrefetch" class="md-nav__link"> |
| -XtlhPrefetch |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xtrace/" title="-Xtrace" class="md-nav__link"> |
| -Xtrace |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xtunevirtualized/" title="-Xtune:virtualized" class="md-nav__link"> |
| -Xtune:virtualized |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xverbosegclog/" title="-Xverbosegclog" class="md-nav__link"> |
| -Xverbosegclog |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xverify/" title="-Xverify" class="md-nav__link"> |
| -Xverify |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xzero/" title="-Xzero" class="md-nav__link"> |
| -Xzero |
| </a> |
| </li> |
| |
| |
| </ul> |
| </nav> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item md-nav__item--nested"> |
| |
| <input class="md-toggle md-nav__toggle" data-md-toggle="nav-11-6" type="checkbox" id="nav-11-6"> |
| |
| <label class="md-nav__link" for="nav-11-6"> |
| JVM -XX options |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-11-6"> |
| JVM -XX options |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xx_jvm_commands/" title="Using -XX options" class="md-nav__link"> |
| Using -XX options |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxactiveprocessorcount/" title="-XXActiveProcessorCount" class="md-nav__link"> |
| -XXActiveProcessorCount |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxallowvmshutdown/" title="-XXallowvmshutdown" class="md-nav__link"> |
| -XXallowvmshutdown |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxclassrelationshipverifier/" title="-XX:[+|-]ClassRelationshipVerifier" class="md-nav__link"> |
| -XX:[+|-]ClassRelationshipVerifier |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxcodecachetotal/" title="-XX:codecachetotal" class="md-nav__link"> |
| -XX:codecachetotal |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxcompactstrings/" title="-XX:[+|-]CompactStrings" class="md-nav__link"> |
| -XX:[+|-]CompactStrings |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxdisableexplicitgc/" title="-XX:[+|-]DisableExplicitGC" class="md-nav__link"> |
| -XX:[+|-]DisableExplicitGC |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxdisclaimjitscratch/" title="-XX:[+|-]DisclaimJitScratch" class="md-nav__link"> |
| -XX:[+|-]DisclaimJitScratch |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxenablecpumonitor/" title="-XX:[+|-]EnableCPUMonitor" class="md-nav__link"> |
| -XX:[+|-]EnableCPUMonitor |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxhandlesigxfsz/" title="-XX:[+|-]handleSIGXFSZ" class="md-nav__link"> |
| -XX:[+|-]handleSIGXFSZ |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxheapdumponoutofmemory/" title="-XX:[+|-]HeapDumpOnOutOfMemory" class="md-nav__link"> |
| -XX:[+|-]HeapDumpOnOutOfMemory |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxheapdumppath/" title="-XX:HeapDumpPath" class="md-nav__link"> |
| -XX:HeapDumpPath |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxheapmanagementmxbeancompatibility/" title="-XX:[+|-]HeapManagementMXBeanCompatibility" class="md-nav__link"> |
| -XX:[+|-]HeapManagementMXBeanCompatibility |
| </a> |
| </li> |
| |
| |
| |
| |
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| <li class="md-nav__item"> |
| <a href="../xxidletuningcompactonidle/" title="-XX:[+|-]IdleTuningCompactOnIdle" class="md-nav__link"> |
| -XX:[+|-]IdleTuningCompactOnIdle |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxidletuninggconidle/" title="-XX:[+|-]IdleTuningGcOnIdle" class="md-nav__link"> |
| -XX:[+|-]IdleTuningGcOnIdle |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxidletuningminfreeheaponidle/" title="-XX:IdleTuningMinFreeHeapOnIdle" class="md-nav__link"> |
| -XX:IdleTuningMinFreeHeapOnIdle |
| </a> |
| </li> |
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| <a href="../xxidletuningminidlewaittime/" title="-XX:IdleTuningMinIdleWaitTime" class="md-nav__link"> |
| -XX:IdleTuningMinIdleWaitTime |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxignoreunrecognizedvmoptions/" title="-XX:[+|-]IgnoreUnrecognizedVMOptions" class="md-nav__link"> |
| -XX:[+|-]IgnoreUnrecognizedVMOptions |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxignoreunrecognizedxxcolonoptions/" title="-XX:[+|-]IgnoreUnrecognizedXXColonOptions" class="md-nav__link"> |
| -XX:[+|-]IgnoreUnrecognizedXXColonOptions |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxinitialrampercentage/" title="-XX:InitialRAMPercentage" class="md-nav__link"> |
| -XX:InitialRAMPercentage |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxinitialheapsize/" title="-XX:InitialHeapSize" class="md-nav__link"> |
| -XX:InitialHeapSize |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxinterleavememory/" title="-XX:[+|-]InterleaveMemory" class="md-nav__link"> |
| -XX:[+|-]InterleaveMemory |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxjitinlinewatches/" title="-XX:[+|-]JITInlineWatches" class="md-nav__link"> |
| -XX:[+|-]JITInlineWatches |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxlazysymbolresolution/" title="-XX:[+|-]LazySymbolResolution" class="md-nav__link"> |
| -XX:[+|-]LazySymbolResolution |
| </a> |
| </li> |
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| <li class="md-nav__item"> |
| <a href="../xxmaxdirectmemorysize/" title="-XX:MaxDirectMemorySize" class="md-nav__link"> |
| -XX:MaxDirectMemorySize |
| </a> |
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| <a href="../xxinitialheapsize/" title="-XX:MaxHeapSize" class="md-nav__link"> |
| -XX:MaxHeapSize |
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| <a href="../xxinitialrampercentage/" title="-XX:MaxRAMPercentage" class="md-nav__link"> |
| -XX:MaxRAMPercentage |
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| <a href="../xxonoutofmemoryerror/" title="-XX:OnOutOfMemoryError" class="md-nav__link"> |
| -XX:OnOutOfMemoryError |
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| -XXnosuballoc32bitmem |
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| -XX:[+|-]PageAlignDirectMemory |
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| -XX:[+|-]RuntimeInstrumentation |
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| -XXsetHWPrefetch |
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| <a href="../xxstacktraceinthrowable/" title="-XX:-StackTraceInThrowable" class="md-nav__link"> |
| -XX:-StackTraceInThrowable |
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| -XX:[+|-]UseCompressedOops |
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| -XX:[+|-]UseContainerSupport |
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| -XX:[+|-]UseNoGC |
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| |
| <h1 id="-xgcsplitheap">-Xgc:splitheap</h1> |
| <p><strong>(Windows™ 32-bit only)</strong></p> |
| <p>By default, the VM uses a contiguous Java™ heap to store Java objects. However, on Windows 32-bit systems, there are restrictions in the 32-bit memory space that prevents a process accessing more than 2GB of memory, even if there is more memory available. To increase the maximum allocatable heap size, OpenJ9 can split the heap, allowing memory use up to the 4GB limit.</p> |
| <p><i class="fa fa-exclamation-triangle" aria-hidden="true"></i> <strong>Restrictions:</strong></p> |
| <ul> |
| <li>A split heap forces the Garbage Collector to use the <code>gencon</code> policy and allocates the new and old areas of the generational Java heap in separate areas of memory. Resizing of the new and old memory areas is disabled.</li> |
| <li><img alt="Start of content that applies only to Java 8 (LTS)" src="../cr/java8.png" /> This option can be used only with Java SE version 8 runtime environments. <img alt="End of content that applies only to Java 8 (LTS)" src="../cr/java_close_lts.png" /> This option is deprecated in Version 8 and will be removed from future versions.</li> |
| </ul> |
| <h2 id="syntax">Syntax</h2> |
| <pre><code> -Xgc:splitheap |
| </code></pre> |
| <h2 id="explanation">Explanation</h2> |
| <p>Use <code>-Xgc:splitheap</code> for applications that must run on the 32-bit VM because of 32-bit JNI libraries, a 32-bit operating system, or 32-bit hardware, but need large Java heaps. By using a larger heap, you can allocate more objects before incurring a garbage collection and you can increase the number of live objects that you can use before an <code>OutOfMemoryError</code> exception occurs.</p> |
| <p>With a split heap, the old area is committed to its maximum size (set with <code>-Xmox</code>) in a lower region of memory and the new area is committed to its maximum size (set with <code>-Xmnx</code>) in a higher region of memory.</p> |
| <p>This option is not recommended if your application works in the any of the following ways:</p> |
| <ul> |
| <li>Performs poorly under the gencon garbage collection policy.</li> |
| <li>Loads a very large number of classes.</li> |
| <li>Uses large amounts of native system memory in JNI libraries; the increased size Java heap might reserve too much of the application's address space.</li> |
| </ul> |
| <!-- ==== END OF TOPIC ==== xgcsplitheap.md ==== --> |
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