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Revise vm.max_map_count recommendation in bootstrap checks #4447

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Revise vm.max_map_count recommendation in bootstrap checks #4447

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2 changes: 1 addition & 1 deletion deploy-manage/deploy/self-managed/bootstrap-checks.md
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Expand Up @@ -109,7 +109,7 @@ $$$bootstrap-checks-max-map-count$$$

In addition to [unlimited address space](#max-size-virtual-memory-check), to use `mmap` effectively, {{es}} also requires the ability to create many memory-mapped areas. The maximum map count check checks that the kernel allows a process to have at least 262,144 memory-mapped areas and is enforced on Linux only.

To pass the maximum map count check, you must configure `vm.max_map_count` via `sysctl` to be at least `262144`.
To pass the maximum map count check, you must configure `vm.max_map_count` via `sysctl` to be at least `262144`. The recommended value is `1048576`.

Alternatively, the maximum map count check is only needed if you are using `mmapfs` or `hybridfs` as the [store type](elasticsearch://reference/elasticsearch/index-settings/store.md) for your indices. If you [do not allow](elasticsearch://reference/elasticsearch/index-settings/store.md#allow-mmap) the use of `mmap` then this bootstrap check will not be enforced.
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