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Update docs to reflect node.processors (#54855)

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We namespaced the previous setting "processors" into
"node.processors". This commit updates some of the documentation to
reflect this.
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Jason Tedor 2020-04-07 13:05:23 -04:00 • committed by GitHub
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27
docs/reference/modules/threadpool.asciidoc
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@ -145,27 +145,26 @@ thread_pool:
The number of processors is automatically detected, and the thread pool The number of processors is automatically detected, and the thread pool
settings are automatically set based on it. In some cases it can be settings are automatically set based on it. In some cases it can be
useful to override the number of detected processors. This can be done useful to override the number of detected processors. This can be done
by explicitly setting the `processors` setting. by explicitly setting the `node.processors` setting.
[source,yaml] [source,yaml]
-------------------------------------------------- --------------------------------------------------
processors: 2 node.processors: 2
-------------------------------------------------- --------------------------------------------------
There are a few use-cases for explicitly overriding the `processors` There are a few use-cases for explicitly overriding the `node.processors`
setting: setting:
. If you are running multiple instances of {es} on the same host but want {es} . If you are running multiple instances of {es} on the same host but want want
to size its thread pools as if it only has a fraction of the CPU, you should {es} to size its thread pools as if it only has a fraction of the CPU, you
override the `processors` setting to the desired fraction, for example, if should override the `node.processors` setting to the desired fraction, for
you're running two instances of {es} on a 16-core machine, set `processors` to 8. example, if you're running two instances of {es} on a 16-core machine, set
Note that this is an expert-level use case and there's a lot more involved `node.processors` to 8. Note that this is an expert-level use case and there's
than just setting the `processors` setting as there are other considerations a lot more involved than just setting the `node.processors` setting as there are
like changing the number of garbage collector threads, pinning processes to other considerations like changing the number of garbage collector threads,
cores, and so on. pinning processes to cores, and so on.
. Sometimes the number of processors is wrongly detected and in such . Sometimes the number of processors is wrongly detected and in such cases
cases explicitly setting the `processors` setting will workaround such explicitly setting the `node.processors` setting will workaround such issues.
issues.
In order to check the number of processors detected, use the nodes info In order to check the number of processors detected, use the nodes info
API with the `os` flag. API with the `os` flag.