123 lines
3.5 KiB
Plaintext
123 lines
3.5 KiB
Plaintext
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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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-Xms8g
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-Xmx8g
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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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-XX:+UseConcMarkSweepGC
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-XX:CMSInitiatingOccupancyFraction=75
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-XX:+UseCMSInitiatingOccupancyOnly
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## G1GC Configuration
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# NOTE: G1GC is only supported on JDK version 10 or later.
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# To use G1GC uncomment the lines below.
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# 10-:-XX:-UseConcMarkSweepGC
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# 10-:-XX:-UseCMSInitiatingOccupancyOnly
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# 10-:-XX:+UseG1GC
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# 10-:-XX:InitiatingHeapOccupancyPercent=75
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## DNS cache policy
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# cache ttl in seconds for positive DNS lookups noting that this overrides the
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# JDK security property networkaddress.cache.ttl; set to -1 to cache forever
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-Des.networkaddress.cache.ttl=60
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# cache ttl in seconds for negative DNS lookups noting that this overrides the
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# JDK security property networkaddress.cache.negative ttl; set to -1 to cache
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# forever
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-Des.networkaddress.cache.negative.ttl=10
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## optimizations
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# pre-touch memory pages used by the JVM during initialization
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-XX:+AlwaysPreTouch
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## basic
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# explicitly set the stack size
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-Xss1m
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# set to headless, just in case
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-Djava.awt.headless=true
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# ensure UTF-8 encoding by default (e.g. filenames)
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-Dfile.encoding=UTF-8
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# use our provided JNA always versus the system one
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-Djna.nosys=true
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# turn off a JDK optimization that throws away stack traces for common
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# exceptions because stack traces are important for debugging
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-XX:-OmitStackTraceInFastThrow
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# flags to configure Netty
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-Dio.netty.noUnsafe=true
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-Dio.netty.noKeySetOptimization=true
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-Dio.netty.recycler.maxCapacityPerThread=0
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# log4j 2
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-Dlog4j.shutdownHookEnabled=false
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-Dlog4j2.disable.jmx=true
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-Djava.io.tmpdir=${ES_TMPDIR}
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## heap dumps
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# generate a heap dump when an allocation from the Java heap fails
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# heap dumps are created in the working directory of the JVM
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-XX:+HeapDumpOnOutOfMemoryError
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# specify an alternative path for heap dumps; ensure the directory exists and
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# has sufficient space
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-XX:HeapDumpPath=data
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# specify an alternative path for JVM fatal error logs
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-XX:ErrorFile=logs/hs_err_pid%p.log
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## JDK 8 GC logging
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8:-XX:+PrintGCDetails
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8:-XX:+PrintGCDateStamps
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8:-XX:+PrintTenuringDistribution
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8:-XX:+PrintGCApplicationStoppedTime
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8:-Xloggc:${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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# due to internationalization enhancements in JDK 9 Elasticsearch need to set the provider to COMPAT otherwise
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# time/date parsing will break in an incompatible way for some date patterns and locals
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9-:-Djava.locale.providers=COMPAT
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# temporary workaround for C2 bug with JDK 10 on hardware with AVX-512
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10-:-XX:UseAVX=2
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