16 lines
640 B
Plaintext
16 lines
640 B
Plaintext
[[heap-size-settings]]
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[discrete]
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=== Heap size settings
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By default, {es} automatically sizes JVM heap based on a node's
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<<node-roles,roles>> and total memory. We recommend this default sizing for most
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production environments. If needed, you can override default sizing by manually
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<<setting-jvm-heap-size,setting JVM heap size>>.
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NOTE: Automatic heap sizing requires the <<jvm-version,bundled JDK>> or, if using
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a custom JRE location, a Java 14 or later JRE.
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NOTE: When running in a container, such as <<docker,Docker>>, total memory is
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defined as the amount of memory visible to the container, not the total system
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memory on the host.
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