Re: measuring swap partition speed

From: Warner Losh <imp_at_bsdimp.com>
Date: Sun, 24 Dec 2023 23:31:01 UTC 
On Sun, Dec 24, 2023, 4:17 AM void <void@f-m.fm> wrote:

> On Sat, 23 Dec 2023, at 21:19, Warner Losh wrote:
>
> > 5s+ of latency on the average, max latency of 12s!  Woof. No wonder you
> > hate life.
>
> LOL!
>
> Thing is, it's not all the time. But when it happens, it tends to stay
> happening, unless something like swapflush runs or if I manually swapoff
> then on.
>

Yea. I think that the swapping tunables may need tweaking... if you must
swap. The swapin/swapoff evictions suggest as much. But my fu for that is
at least 20 years stale. There may be tuneables in tuning(9) related to vm
that might help.

Warner

>