init

elastic/jvm.options

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+################################################################
+##
+## JVM configuration
+##
+################################################################
+##
+## WARNING: DO NOT EDIT THIS FILE. If you want to override the
+## JVM options in this file, or set any additional options, you
+## should create one or more files in the jvm.options.d
+## directory containing your adjustments.
+##
+## See https://www.elastic.co/guide/en/elasticsearch/reference/@project.minor.version@/jvm-options.html
+## for more information.
+##
+################################################################
+
+
+
+################################################################
+## IMPORTANT: JVM heap size
+################################################################
+##
+## The heap size is automatically configured by Elasticsearch
+## based on the available memory in your system and the roles
+## each node is configured to fulfill. If specifying heap is
+## required, it should be done through a file in jvm.options.d,
+## which should be named with .options suffix, and the min and
+## max should be set to the same value. For example, to set the
+## heap to 4 GB, create a new file in the jvm.options.d
+## directory containing these lines:
+##
+## -Xms4g
+## -Xmx4g
+##
+## See https://www.elastic.co/guide/en/elasticsearch/reference/@project.minor.version@/heap-size.html
+## for more information
+##
+################################################################
+
+
+################################################################
+## Expert settings
+################################################################
+##
+## All settings below here are considered expert settings. Do
+## not adjust them unless you understand what you are doing. Do
+## not edit them in this file; instead, create a new file in the
+## jvm.options.d directory containing your adjustments.
+##
+################################################################
+
+-XX:+UseG1GC
+
+## JVM temporary directory
+-Djava.io.tmpdir=${ES_TMPDIR}
+
+# Leverages accelerated vector hardware instructions; removing this may
+# result in less optimal vector performance
+20-:--add-modules=jdk.incubator.vector
+
+# Required to workaround performance issue in JDK 23, https://github.com/elastic/elasticsearch/issues/113030
+23:-XX:CompileCommand=dontinline,java/lang/invoke/MethodHandle.setAsTypeCache
+23:-XX:CompileCommand=dontinline,java/lang/invoke/MethodHandle.asTypeUncached
+
+# Lucene 10: apply MADV_NORMAL advice to enable more aggressive readahead
+-Dorg.apache.lucene.store.defaultReadAdvice=normal
+
+## 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 unless an alternative path is
+# specified
+-XX:+HeapDumpOnOutOfMemoryError
+
+# exit right after heap dump on out of memory error
+-XX:+ExitOnOutOfMemoryError
+
+# specify an alternative path for heap dumps; ensure the directory exists and
+# has sufficient space
+#@heap.dump.path@
+
+# specify an alternative path for JVM fatal error logs
+#@error.file@
+
+## GC logging
+-Xlog:gc*,gc+age=trace,safepoint:file=@loggc@:utctime,level,pid,tags:filecount=32,filesize=64m
+