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https://github.com/honeymoose/OpenSearch.git
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6075c30c6c
JDK 14 has removed CMS. This commit restricts the support for CMS to JDK 8 through JDK 13, and defaults to G1 GC on JDK 14. We will revisit all defaults in the future, but this ensures that we run with a properly-configured garbage collector on JDK 14+.
78 lines
2.2 KiB
Plaintext
78 lines
2.2 KiB
Plaintext
## 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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-Xms${heap.min}
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-Xmx${heap.max}
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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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8-13:-XX:+UseConcMarkSweepGC
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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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14-:-XX:+UseG1GC
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14-:-XX:G1ReservePercent=25
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14-:-XX:InitiatingHeapOccupancyPercent=30
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## JVM temporary directory
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-Djava.io.tmpdir=${ES_TMPDIR}
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## heap dumps
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# generate a heap dump when an allocation from the Java heap fails
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# heap dumps are created in the working directory of the JVM
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-XX:+HeapDumpOnOutOfMemoryError
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# specify an alternative path for heap dumps; ensure the directory exists and
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# has sufficient space
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${heap.dump.path}
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# specify an alternative path for JVM fatal error logs
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${error.file}
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## JDK 8 GC logging
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8:-XX:+PrintGCDetails
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8:-XX:+PrintGCDateStamps
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8:-XX:+PrintTenuringDistribution
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8:-XX:+PrintGCApplicationStoppedTime
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8:-Xloggc:${loggc}
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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=${loggc}:utctime,pid,tags:filecount=32,filesize=64m
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