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arc_default_max on Linux should match FreeBSD

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Commits 518b487 and 23bdb07 changed the default ARC size limit on
Linux systems to 1/2 of physical memory, which has become too
strict for modern systems with large amounts of RAM. This patch
changes the default limit to match that of FreeBSD, so ZFS may
have a unified value on both platforms.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Edmund Nadolski <edmund.nadolski@ixsystems.com>
Closes #15437
This commit is contained in:
ednadolski-ix
2023-10-26 10:13:01 -06:00
committed by GitHub
parent 3afdc97d91
commit 6a629f3234
2 changed files with 9 additions and 6 deletions
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man/man4/zfs.4
+1 -4
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@@ -644,10 +644,7 @@ Max size of ARC in bytes.
If
.Sy 0 ,
then the max size of ARC is determined by the amount of system memory installed.
Under Linux, half of system memory will be used as the limit.
Under
.Fx ,
the larger of
The larger of
.Sy all_system_memory No \- Sy 1 GiB
and
.Sy 5/8 No \(mu Sy all_system_memory