[Bug 290207] [ZFS] lowering "vfs.zfs.arc.max" to a low value causes kernel threads of "arc_evict" to use 91% CPU and disks to wait. System gets unresponsive...

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From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 31 Oct 2025 17:49:43 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290207

--- Comment #23 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to Mark Millard from comment #22)

Mark Johnston sent another note:

QUOTE
Could also be other UMA usage.  vm.uma_kmem_total would show it if so.
You can get a much more detailed breakdown by looking at the vm.uma
sysctl tree, or vmstat -z output.
END QUOTE

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