maintainer-feedback requested: [Bug 269503] docs.freebsd.org: default vfs.zfs.arc.meta_limit

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From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 12 Feb 2023 13:15:45 UTC

Graham Perrin <grahamperrin@freebsd.org> has asked freebsd-fs (Nobody)
<fs@FreeBSD.org> for maintainer-feedback:
Bug 269503: docs.freebsd.org: default vfs.zfs.arc.meta_limit
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=269503



--- Comment #1 from Graham Perrin <grahamperrin@freebsd.org> ---
I don't know about ZFS in 12.4-RELEASE. 

----

For OpenZFS in 13.0-RELEASE and greater, take care to not confuse these two: 

vfs.zfs.arc.meta_limit_percent: 75
vfs.zfs.arc.meta_limit: 0

fs@ please, can you advise? 


References: 

<https://openzfs.github.io/openzfs-docs/Performance%20and%20Tuning/Module%20Par
ameters.html#zfs-arc-meta-limit>

<https://openzfs.github.io/openzfs-docs/Performance%20and%20Tuning/Module%20Par
ameters.html#zfs-arc-meta-limit-percent>

----

From
<https://openzfs.github.io/openzfs-docs/Developer%20Resources/OpenZFS%20Excepti
ons.html?highlight=6914>: 

> 6914	  •    Under Linux the arc_meta_limit can be tuned with the 
> zfs_arc_meta_limit_percent module option.

Is Linux still exceptional?