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| |
| <li class="md-nav__item"> |
| <a href="../dump_systemdump/" title="System dump" class="md-nav__link"> |
| System dump |
| </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-11-3" type="checkbox" id="nav-11-3"> |
| |
| <label class="md-nav__link" for="nav-11-3"> |
| Tools |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-11-3"> |
| Tools |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../tool_jextract/" title="Dump extractor" class="md-nav__link"> |
| Dump extractor |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../tool_jdmpview/" title="Dump viewer" class="md-nav__link"> |
| Dump viewer |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../tool_traceformat/" title="Trace formatter" class="md-nav__link"> |
| Trace formatter |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../tool_builder/" title="Option builder" class="md-nav__link"> |
| Option builder |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../tool_jcmd/" title="Java command (jcmd) tool" class="md-nav__link"> |
| Java command (jcmd) tool |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <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_jstat/" title="Java statistics monitoring (jstat) tool" class="md-nav__link"> |
| Java statistics monitoring (jstat) 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-11-4" type="checkbox" id="nav-11-4"> |
| |
| <label class="md-nav__link" for="nav-11-4"> |
| Interfaces |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-11-4"> |
| 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> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../interface_lang_management/" title="Language Management" class="md-nav__link"> |
| Language Management |
| </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-12" type="checkbox" id="nav-12" checked> |
| |
| <label class="md-nav__link" for="nav-12"> |
| Command-line options |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> |
| <label class="md-nav__title" for="nav-12"> |
| 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-12-4" type="checkbox" id="nav-12-4"> |
| |
| <label class="md-nav__link" for="nav-12-4"> |
| System property options |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-12-4"> |
| 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="../djavalangstringsubstringnocopy/" title="-Djava.lang.string.substring.nocopy" class="md-nav__link"> |
| -Djava.lang.string.substring.nocopy |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../djavalangstringbuffergrowaggressively/" title="-Djava.lang.stringBuffer.growAggressively" class="md-nav__link"> |
| -Djava.lang.stringBuffer.growAggressively |
| </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-12-5" type="checkbox" id="nav-12-5" checked> |
| |
| <label class="md-nav__link" for="nav-12-5"> |
| JVM -X options |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-12-5"> |
| 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"> |
| <a href="../xgcsplitheap/" title="-Xgc:splitheap" class="md-nav__link"> |
| -Xgc:splitheap |
| </a> |
| </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="../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 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"> |
| -Xlp |
| </label> |
| |
| <a href="./" title="-Xlp" class="md-nav__link md-nav__link--active"> |
| -Xlp |
| </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> |
| |
| <nav class="md-nav"> |
| <ul class="md-nav__list"> |
| |
| <li class="md-nav__item"> |
| <a href="#aix" class="md-nav__link"> |
| AIX® |
| </a> |
| |
| </li> |
| |
| <li class="md-nav__item"> |
| <a href="#linux" class="md-nav__link"> |
| Linux® |
| </a> |
| |
| </li> |
| |
| <li class="md-nav__item"> |
| <a href="#windows" class="md-nav__link"> |
| Windows™ |
| </a> |
| |
| </li> |
| |
| <li class="md-nav__item"> |
| <a href="#zos" class="md-nav__link"> |
| z/OS® |
| </a> |
| |
| </li> |
| |
| </ul> |
| </nav> |
| |
| </li> |
| |
| <li class="md-nav__item"> |
| <a href="#limitation-and-workaround" class="md-nav__link"> |
| Limitation and workaround |
| </a> |
| |
| </li> |
| |
| <li class="md-nav__item"> |
| <a href="#see-also" class="md-nav__link"> |
| See also |
| </a> |
| |
| </li> |
| |
| |
| |
| |
| |
| </ul> |
| |
| </nav> |
| |
| </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> |
| |
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| <li class="md-nav__item md-nav__item--nested"> |
| |
| <input class="md-toggle md-nav__toggle" data-md-toggle="nav-12-6" type="checkbox" id="nav-12-6"> |
| |
| <label class="md-nav__link" for="nav-12-6"> |
| JVM -XX options |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-12-6"> |
| JVM -XX options |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
| |
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| |
| |
| |
| |
| <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> |
| |
| |
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| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxallowvmshutdown/" title="-XXallowvmshutdown" class="md-nav__link"> |
| -XXallowvmshutdown |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxclassrelationshipverifier/" title="-XX:[+|-]ClassRelationshipVerifier" class="md-nav__link"> |
| -XX:[+|-]ClassRelationshipVerifier |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxconcgcthreads/" title="-XX:ConcGCThreads" class="md-nav__link"> |
| -XX:ConcGCThreads |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxcodecachetotal/" title="-XX:codecachetotal" class="md-nav__link"> |
| -XX:codecachetotal |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxcompactstrings/" title="-XX:[+|-]CompactStrings" class="md-nav__link"> |
| -XX:[+|-]CompactStrings |
| </a> |
| </li> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxdisableexplicitgc/" title="-XX:[+|-]DisableExplicitGC" class="md-nav__link"> |
| -XX:[+|-]DisableExplicitGC |
| </a> |
| </li> |
| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxdisclaimjitscratch/" title="-XX:[+|-]DisclaimJitScratch" class="md-nav__link"> |
| -XX:[+|-]DisclaimJitScratch |
| </a> |
| </li> |
| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxenablecpumonitor/" title="-XX:[+|-]EnableCPUMonitor" class="md-nav__link"> |
| -XX:[+|-]EnableCPUMonitor |
| </a> |
| </li> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxexitonoutofmemoryerror/" title="-XX:[+|-]ExitOnOutOfMemoryError" class="md-nav__link"> |
| -XX:[+|-]ExitOnOutOfMemoryError |
| </a> |
| </li> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxgloballockreservation/" title="-XX:[+|-]GlobalLockReservation" class="md-nav__link"> |
| -XX:[+|-]GlobalLockReservation |
| </a> |
| </li> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxhandlesigxfsz/" title="-XX:[+|-]HandleSIGXFSZ" class="md-nav__link"> |
| -XX:[+|-]HandleSIGXFSZ |
| </a> |
| </li> |
| |
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| <li class="md-nav__item"> |
| <a href="../xxhandlesigabrt/" title="-XX:[+|-]HandleSIGABRT" class="md-nav__link"> |
| -XX:[+|-]HandleSIGABRT |
| </a> |
| </li> |
| |
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| <li class="md-nav__item"> |
| <a href="../xxheapdumponoutofmemory/" title="-XX:[+|-]HeapDumpOnOutOfMemory" class="md-nav__link"> |
| -XX:[+|-]HeapDumpOnOutOfMemory |
| </a> |
| </li> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxheapdumppath/" title="-XX:HeapDumpPath" class="md-nav__link"> |
| -XX:HeapDumpPath |
| </a> |
| </li> |
| |
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| |
| <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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| |
| <li class="md-nav__item"> |
| <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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| |
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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> |
| </li> |
| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxinitialheapsize/" title="-XX:MaxHeapSize" class="md-nav__link"> |
| -XX:MaxHeapSize |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxinitialrampercentage/" title="-XX:MaxRAMPercentage" class="md-nav__link"> |
| -XX:MaxRAMPercentage |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxonoutofmemoryerror/" title="-XX:OnOutOfMemoryError" class="md-nav__link"> |
| -XX:OnOutOfMemoryError |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxoriginaljdk8heapsizecompatibilitymode/" title="-XX:[+|-]OriginalJDK8HeapSizeCompatibilityMode" class="md-nav__link"> |
| -XX:[+|-]OriginalJDK8HeapSizeCompatibilityMode |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxnosuballoc32bitmem/" title="-XXnosuballoc32bitmem" class="md-nav__link"> |
| -XXnosuballoc32bitmem |
| </a> |
| </li> |
| |
| |
| |
| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxpagealigndirectmemory/" title="-XX:[+|-]PageAlignDirectMemory" class="md-nav__link"> |
| -XX:[+|-]PageAlignDirectMemory |
| </a> |
| </li> |
| |
| |
| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxparallelcmsthreads/" title="-XX:ParallelCMSThreads" class="md-nav__link"> |
| -XX:ParallelCMSThreads |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxparallelgcthreads/" title="-XX:ParallelGCThreads" class="md-nav__link"> |
| -XX:ParallelGCThreads |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxpositiveidentityhash/" title="-XX:[+|-]PositiveIdentityHash" class="md-nav__link"> |
| -XX:[+|-]PositiveIdentityHash |
| </a> |
| </li> |
| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxprintcodecache/" title="-XX:[+|-]PrintCodeCache" class="md-nav__link"> |
| -XX:[+|-]PrintCodeCache |
| </a> |
| </li> |
| |
| |
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| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxprintflagsfinal/" title="-XX:[+|-]PrintFlagsFinal" class="md-nav__link"> |
| -XX:[+|-]PrintFlagsFinal |
| </a> |
| </li> |
| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxreadipinfoforras/" title="-XX:[+|-]ReadIPInfoForRAS" class="md-nav__link"> |
| -XX:[+|-]ReadIPInfoForRAS |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxreducecpumonitoroverhead/" title="-XX:[+|-]ReduceCPUMonitorOverhead" class="md-nav__link"> |
| -XX:[+|-]ReduceCPUMonitorOverhead |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxruntimeinstrumentation/" title="-XX:[+|-]RuntimeInstrumentation" class="md-nav__link"> |
| -XX:[+|-]RuntimeInstrumentation |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxsethwprefetch/" title="-XXsetHWPrefetch" class="md-nav__link"> |
| -XXsetHWPrefetch |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxshareanonymousclasses/" title="-XX:[+|-]ShareAnonymousClasses" class="md-nav__link"> |
| -XX:[+|-]ShareAnonymousClasses |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxshareclassesenablebci/" title="-XX:ShareClassesDisableBCI" class="md-nav__link"> |
| -XX:ShareClassesDisableBCI |
| </a> |
| </li> |
| |
| |
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| |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../xxshareclassesenablebci/" title="-XX:ShareClassesEnableBCI" class="md-nav__link"> |
| -XX:ShareClassesEnableBCI |
| </a> |
| </li> |
| |
| |
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| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxsharedcachehardlimit/" title="-XX:SharedCacheHardLimit" class="md-nav__link"> |
| -XX:SharedCacheHardLimit |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxshareunsafeclasses/" title="-XX:[+|-]ShareUnsafeClasses" class="md-nav__link"> |
| -XX:[+|-]ShareUnsafeClasses |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxstacktraceinthrowable/" title="-XX:-StackTraceInThrowable" class="md-nav__link"> |
| -XX:-StackTraceInThrowable |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxtransparenthugepage/" title="-XX:[+|-]TransparentHugePage" class="md-nav__link"> |
| -XX:[+|-]TransparentHugePage |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxusecompressedoops/" title="-XX:[+|-]UseCompressedOops" class="md-nav__link"> |
| -XX:[+|-]UseCompressedOops |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxusecontainersupport/" title="-XX:[+|-]UseContainerSupport" class="md-nav__link"> |
| -XX:[+|-]UseContainerSupport |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxusegcstartuphints/" title="-XX:[+|-]UseGCStartupHints" class="md-nav__link"> |
| -XX:[+|-]UseGCStartupHints |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxusenogc/" title="-XX:[+|-]UseNoGC" class="md-nav__link"> |
| -XX:[+|-]UseNoGC |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxverboseverification/" title="-XX:[+|-]VerboseVerification" class="md-nav__link"> |
| -XX:[+|-]VerboseVerification |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../xxvmlockclassloader/" title="-XX:[+|-]VMLockClassLoader" class="md-nav__link"> |
| -XX:[+|-]VMLockClassLoader |
| </a> |
| </li> |
| |
| |
| </ul> |
| </nav> |
| </li> |
| |
| |
| </ul> |
| </nav> |
| </li> |
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| <li class="md-nav__item md-nav__item--nested"> |
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| <input class="md-toggle md-nav__toggle" data-md-toggle="nav-13" type="checkbox" id="nav-13"> |
| |
| <label class="md-nav__link" for="nav-13"> |
| Reference |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> |
| <label class="md-nav__title" for="nav-13"> |
| Reference |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
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| |
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| |
| |
| <li class="md-nav__item"> |
| <a href="../openj9_support/" title="Supported environments" class="md-nav__link"> |
| Supported environments |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../openj9_defaults/" title="Default settings" class="md-nav__link"> |
| Default settings |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../openj9_signals/" title="Signal handling" class="md-nav__link"> |
| Signal handling |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../openj9_directories/" title="Directory conventions" class="md-nav__link"> |
| Directory conventions |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../messages_intro/" title="OpenJ9 messages" class="md-nav__link"> |
| OpenJ9 messages |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../env_var/" title="Environment variables" class="md-nav__link"> |
| Environment variables |
| </a> |
| </li> |
| |
| |
| </ul> |
| </nav> |
| </li> |
| |
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| <li class="md-nav__item md-nav__item--nested"> |
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| API documentation |
| </label> |
| <nav class="md-nav" data-md-component="collapsible" data-md-level="1"> |
| <label class="md-nav__title" for="nav-14"> |
| API documentation |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../api-overview/" title="Overview" class="md-nav__link"> |
| Overview |
| </a> |
| </li> |
| |
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| |
| |
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| |
| <li class="md-nav__item md-nav__item--nested"> |
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| Java 8 API |
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| <nav class="md-nav" data-md-component="collapsible" data-md-level="2"> |
| <label class="md-nav__title" for="nav-14-2"> |
| Java 8 API |
| </label> |
| <ul class="md-nav__list" data-md-scrollfix> |
| |
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| |
| <li class="md-nav__item"> |
| <a href="../api-conditionhandling/" title="Condition exception handling" class="md-nav__link"> |
| Condition exception handling |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../api-cuda/" title="CUDA4J" class="md-nav__link"> |
| CUDA4J |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../api-daa/" title="Data access acceleration" class="md-nav__link"> |
| Data access acceleration |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../api-dtfj/" title="DTFJ" class="md-nav__link"> |
| DTFJ |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../api-gpu/" title="GPU" class="md-nav__link"> |
| GPU |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../api-jvm/" title="JVM diagnostic utilities" class="md-nav__link"> |
| JVM diagnostic utilities |
| </a> |
| </li> |
| |
| |
| |
| |
| |
| |
| |
| <li class="md-nav__item"> |
| <a href="../api-langmgmt/" title="Monitoring and management" class="md-nav__link"> |
| Monitoring and management |
| </a> |
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| |
| <h1 id="-xlp">-Xlp</h1> |
| <p>Requests the OpenJ9 VM to allocate the Java™ object heap and JIT code cache memory with large pages.</p> |
| <p><i class="fa fa-pencil-square-o" aria-hidden="true"></i> <strong>Note:</strong> This option is deprecated in all versions later than Java 8. Use the <a href="../xlpcodecache/"><code>-Xlp:codecache</code></a> and <a href="../xlpobjectheap/"><code>-Xlp:objectheap</code></a> options instead.</p> |
| <p><i class="fa fa-exclamation-triangle" aria-hidden="true"></i> <strong>Restriction:</strong> This option does not work on macOS®.</p> |
| <p>If you use the <a href="../xgc/#preferredheapbase"><code>-Xgc:preferredHeapBase</code></a> option with <code>-Xlp</code>, the preferredHeapBase address must be a multiple of the large page size. If you specify an inaccurate heap base address, the heap is allocated with the default page size.</p> |
| <p>To find out the large page sizes available and the current setting, use the <code>-verbose:sizes</code> option. Note that the current settings are the requested sizes and not the sizes obtained. For object heap size information, check the <code>-verbose:gc</code> output.</p> |
| <h2 id="syntax">Syntax</h2> |
| <pre><code> -Xlp[<size>] |
| </code></pre> |
| <p>See <a href="../x_jvm_commands/">Using -X command-line options</a> for more information about the <code><size></code> parameter.</p> |
| <h2 id="explanation">Explanation</h2> |
| <h3 id="aix">AIX®</h3> |
| <dl> |
| <dd> |
| <p>If <code><size></code> is specified, the VM attempts to allocate the JIT code cache memory by using pages of that size. Allocating large pages by using <code>-Xlp</code> is supported only on the 64-bit VM, not the 32-bit VM.</p> |
| <p>If a size is not specified, this option requests the VM to allocate the Java object heap (the heap from which Java objects are allocated) with large (16 MB) pages.</p> |
| <p>If large pages are not available, the Java object heap is allocated with the next smaller page size that is supported by the system. AIX requires special configuration to enable large pages.</p> |
| <p>The VM supports the use of large pages only to back the Java object heap shared memory segments. The VM uses <code>shmget()</code> with the SHM_LGPG and SHM_PIN flags to allocate large pages. The <code>-Xlp</code> option replaces the environment variable <code>IBM_JAVA_LARGE_PAGE_SIZE</code>, which is now ignored if set.</p> |
| <p>For more information about configuring AIX support for large pages, see <a href="https://www.ibm.com/support/knowledgecenter/ssw_aix_72/performance/large_page_ovw.html">Large pages</a> in the AIX product documentation.</p> |
| </dd> |
| </dl> |
| <h3 id="linux">Linux®</h3> |
| <dl> |
| <dd> |
| <p>If <code><size></code> is specified, the VM attempts to allocate the JIT code cache memory by using pages of that size. Allocating large pages by using <code>-Xlp</code> is supported only on the 64-bit VM, not the 32-bit VM.</p> |
| <p>If large pages are not available, the VM does not start and produces an error message. The VM uses <code>shmget()</code> to allocate large pages for the heap. Large pages are supported by systems that have Linux kernels v2.6 or higher.</p> |
| <p><i class="fa fa-pencil-square-o" aria-hidden="true"></i> <strong>Note:</strong> Linux for IBM Z® supports only a large page size of 1 M.</p> |
| <p>Depending on the architecture, 1 MB or 2 MB large pages, when available, are the default size for the object heap and the code cache. The options that control these sizes are <a href="../xlpcodecache/"><code>Xlp:codecache</code></a> and <a href="../xlpobjectheap/"><code>-Xlp:objectheap</code></a>.</p> |
| </dd> |
| </dl> |
| <h3 id="windows">Windows™</h3> |
| <dl> |
| <dd> |
| <p>If <code><size></code> is specified, the VM attempts to allocate the JIT code cache memory by using pages of that size.</p> |
| <p>Allocating large pages by using <code>-Xlp</code> is supported only on the 64-bit VM, not the 32-bit VM.</p> |
| </dd> |
| </dl> |
| <h3 id="zos">z/OS®</h3> |
| <dl> |
| <dd> |
| <p>If <code><size></code> is specified but unsuccessful, or if executable pages of that size are not supported, 1 M pageable is attempted. If 1 M pageable is not available, the JIT code cache memory is allocated by using the default or smallest available executable page size.</p> |
| <p>If <code><size></code> is not specified, the 1 M nonpageable size is used. If large pages are not supported by the hardware, or enabled in RACF®, the VM does not start and produces an error message.</p> |
| <p>Allocating large pages by using <code>-Xlp</code> is supported only on the 64-bit VM, not the 31-bit VM. The <code>-Xlp[<size>]</code> option supports only a large page size of 2 G and 1 M (nonpageable).</p> |
| <p>1 M pageable pages, when available, are the default size for the object heap and the code cache. The options that control these sizes are <a href="../xlpcodecache/"><code>Xlp:codecache</code></a> and <a href="../xlpobjectheap/"><code>-Xlp:objectheap</code></a>.</p> |
| <p>Specifying <code>-Xlp1M</code> uses a 1 M pageable size for the code cache, when available. Specifying <code>-Xlp2G</code> sets the object heap size, but generates a warning that 2 G nonpageable pages cannot be used for the code cache. Use the <code>-Xlp:objectheap:pagesize=2G,nonpageable</code> option to avoid the warning.</p> |
| </dd> |
| </dl> |
| <h2 id="limitation-and-workaround">Limitation and workaround</h2> |
| <p>The VM ends if insufficient operating system resources are available to satisfy the request. However, an error message is not issued. There are a number of reasons why the VM cannot honor a large page request. For example, there might be insufficient large pages available on the system at the time of the request. To check whether the <code>-Xlp</code> request was honored, you can review the output from <code>-verbose:gc</code>. Look for the attributes <code>requestedPageSize</code> and <code>pageSize</code> in the <code>-verbose:gc</code> log file. The attribute <code>requestedPageSize</code> contains the value specified by <code>-Xlp</code>. The attribute <code>pageSize</code> is the actual page size used by the VM.</p> |
| <h2 id="see-also">See also</h2> |
| <ul> |
| <li><a href="https://www.ibm.com/support/knowledgecenter/SSYKE2_8.0.0/com.ibm.java.vm.80.doc/docs/j9_configure_large_page.html">Configuring large page memory allocation</a>.</li> |
| </ul> |
| <!-- ==== END OF TOPIC ==== xlp.md ==== --> |
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