[Bug 275594] High CPU usage by arc_prune; analysis and fix

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 19 Feb 2024 23:36:51 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275594

--- Comment #61 from Seigo Tanimura <seigo.tanimura@gmail.com> ---
(In reply to Seigo Tanimura from comment #60)

Along with "sysctl vfs.zfs.znode", could you please also take
vfs.nullfs.recycle?

It has the counters of the vm_lowmem kernel events.
(EVENTHANDLER(9) does not have the generic counters, so I have hacked them into
the nullfs fix.)

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