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April 24, 2023 08:55
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opensearch_jvm.options default values
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| ## JVM configuration | |
| ################################################################ | |
| ## IMPORTANT: JVM heap size | |
| ################################################################ | |
| ## | |
| ## You should always set the min and max JVM heap | |
| ## size to the same value. For example, to set | |
| ## the heap to 4 GB, set: | |
| ## | |
| ## -Xms4g | |
| ## -Xmx4g | |
| ## | |
| ## See https://opensearch.org/docs/opensearch/install/important-settings/ | |
| ## for more information | |
| ## | |
| ################################################################ | |
| # Xms represents the initial size of total heap space | |
| # Xmx represents the maximum size of total heap space | |
| -Xms1g | |
| -Xmx1g | |
| ################################################################ | |
| ## Expert settings | |
| ################################################################ | |
| ## | |
| ## All settings below this section are considered | |
| ## expert settings. Don't tamper with them unless | |
| ## you understand what you are doing | |
| ## | |
| ################################################################ | |
| ## GC configuration | |
| 8-10:-XX:+UseConcMarkSweepGC | |
| 8-10:-XX:CMSInitiatingOccupancyFraction=75 | |
| 8-10:-XX:+UseCMSInitiatingOccupancyOnly | |
| ## G1GC Configuration | |
| # NOTE: G1 GC is only supported on JDK version 10 or later | |
| # to use G1GC, uncomment the next two lines and update the version on the | |
| # following three lines to your version of the JDK | |
| # 10:-XX:-UseConcMarkSweepGC | |
| # 10:-XX:-UseCMSInitiatingOccupancyOnly | |
| 11-:-XX:+UseG1GC | |
| 11-:-XX:G1ReservePercent=25 | |
| 11-:-XX:InitiatingHeapOccupancyPercent=30 | |
| ## JVM temporary directory | |
| -Djava.io.tmpdir=${OPENSEARCH_TMPDIR} | |
| ## heap dumps | |
| # generate a heap dump when an allocation from the Java heap fails | |
| # heap dumps are created in the working directory of the JVM | |
| -XX:+HeapDumpOnOutOfMemoryError | |
| # specify an alternative path for heap dumps; ensure the directory exists and | |
| # has sufficient space | |
| -XX:HeapDumpPath=data | |
| # specify an alternative path for JVM fatal error logs | |
| -XX:ErrorFile=logs/hs_err_pid%p.log | |
| ## JDK 8 GC logging | |
| 8:-XX:+PrintGCDetails | |
| 8:-XX:+PrintGCDateStamps | |
| 8:-XX:+PrintTenuringDistribution | |
| 8:-XX:+PrintGCApplicationStoppedTime | |
| 8:-Xloggc:logs/gc.log | |
| 8:-XX:+UseGCLogFileRotation | |
| 8:-XX:NumberOfGCLogFiles=32 | |
| 8:-XX:GCLogFileSize=64m | |
| # JDK 9+ GC logging | |
| 9-:-Xlog:gc*,gc+age=trace,safepoint:file=logs/gc.log:utctime,pid,tags:filecount=32,filesize=64m | |
| # Explicitly allow security manager (https://bugs.openjdk.java.net/browse/JDK-8270380) | |
| 18-:-Djava.security.manager=allow | |
| ## OpenDistro Performance Analyzer | |
| -Dclk.tck=100 | |
| -Djdk.attach.allowAttachSelf=true | |
| -Djava.security.policy=/usr/share/opensearch/config/opensearch-performance-analyzer/opensearch_security.policy | |
| --add-opens=jdk.attach/sun.tools.attach=ALL-UNNAMED |
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