[Bug 235748] Using swap with free memory available

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235748

--- Comment #4 from info at murrawhip.net ---
Mysqld is actually using less memory than before. It's tuned to only use 19GB
of its 32GB ram, 60%. The normal recommendation is for 80%. I lowered it from
70% when this issue started happening but it doesn't seem to have helped.

Note that it starts using swap from the very beginning, after a reboot, when
MySQL has only used a couple of GB of ram.

I did notice it using a significant amount of swap in 11.1, but it didn't ever
take all of it. I assumed the issue was that I hadn't set arc_max, so it and
MySQL were competing for memory. I upgraded to 11.2 and set the arc_max at the
same time.

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