2021-02-13 11:38:38 -08:00
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## JVM configuration
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################################################################
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## IMPORTANT: JVM heap size
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################################################################
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##
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## You should always set the min and max JVM heap
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## size to the same value. For example, to set
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## the heap to 4 GB, set:
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##
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## -Xms4g
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## -Xmx4g
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##
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## See https://www.elastic.co/guide/en/elasticsearch/reference/current/heap-size.html
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## for more information
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##
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################################################################
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# Xms represents the initial size of total heap space
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# Xmx represents the maximum size of total heap space
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2021-04-01 01:23:14 -07:00
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-Xmn4G
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-Xms8G
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-Xmx8G
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-XX:MaxMetaspaceSize=2G
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2021-04-20 12:34:43 -07:00
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-Xss1G
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2021-04-01 01:23:14 -07:00
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-Xnoclassgc
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-XX:MaxDirectMemorySize=2G
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-XX:InitialRAMPercentage=80
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-XX:MaxRAMPercentage=80
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-XX:MinRAMPercentage=80
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2021-02-13 11:38:38 -08:00
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################################################################
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## Expert settings
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################################################################
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##
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## All settings below this section are considered
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## expert settings. Don't tamper with them unless
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## you understand what you are doing
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##
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################################################################
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## GC configuration
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2021-04-01 01:23:14 -07:00
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8-9:-XX:+UseConcMarkSweepGC
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2021-02-13 11:38:38 -08:00
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8-13:-XX:CMSInitiatingOccupancyFraction=75
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8-13:-XX:+UseCMSInitiatingOccupancyOnly
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## G1GC Configuration
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# NOTE: G1 GC is only supported on JDK version 10 or later
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# to use G1GC, uncomment the next two lines and update the version on the
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# following three lines to your version of the JDK
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# 10-13:-XX:-UseConcMarkSweepGC
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# 10-13:-XX:-UseCMSInitiatingOccupancyOnly
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2021-04-01 01:23:14 -07:00
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11-:-XX:+UseG1GC
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11-:-XX:G1ReservePercent=25
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11-:-XX:InitiatingHeapOccupancyPercent=30
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2021-02-13 11:38:38 -08:00
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## JVM temporary directory
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-Djava.io.tmpdir=${ES_TMPDIR}
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## heap dumps
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# generate a heap dump when an allocation from the Java heap fails
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# heap dumps are created in the working directory of the JVM
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-XX:+HeapDumpOnOutOfMemoryError
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# specify an alternative path for heap dumps; ensure the directory exists and
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# has sufficient space
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2021-04-01 01:23:14 -07:00
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-XX:HeapDumpPath=/data
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2021-02-13 11:38:38 -08:00
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# specify an alternative path for JVM fatal error logs
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2021-04-01 01:23:14 -07:00
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-XX:ErrorFile=/var/log/hs_err_pid%p.log
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2021-02-13 11:38:38 -08:00
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## JDK 8 GC logging
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8:-XX:+PrintGCDetails
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8:-XX:+PrintGCDateStamps
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8:-XX:+PrintTenuringDistribution
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8:-XX:+PrintGCApplicationStoppedTime
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8:-Xloggc:${ES_TMPDIR}/gc.log
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8:-XX:+UseGCLogFileRotation
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8:-XX:NumberOfGCLogFiles=32
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8:-XX:GCLogFileSize=64m
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# JDK 9+ GC logging
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9-:-Xlog:gc*,gc+age=trace,safepoint:file=${ES_TMPDIR}/gc.log:utctime,pid,tags:filecount=32,filesize=64m
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