On Tue, Jun 26, 2018 at 02:39:27PM -0700, Adrian Chadd wrote: > On Mon, 25 Jun 2018 at 11:23, Steve Kargl > <s...@troutmask.apl.washington.edu> wrote: > > > > On Sun, Jun 24, 2018 at 12:03:29PM +0200, Alexander Leidinger wrote: > > > > > > I don't have hard evidence, but there is enough "smell" to open up a > > > discussion... > > > > > > Short: > > > Can it be that enabling numa in the kernel is the reason why some > > > people see instability with zfs and usage of swap while a lot of free > > > RAM is available? > > > > Interesting observation. I do have NUMA in my kernel, and swap > > seems to be used instead of recycling freeing inactive memory. > > Top shows > > > > Mem: 506M Active, 27G Inact, 98M Laundry, 2735M Wired, 1474M Buf, 1536M Free > > Swap: 16G Total, 120M Used, 16G Free > > > > Perhaps, I don't understand what is meant by inactive memory. I > > thought that this means memory is still available in the buffer > > cache, but nothing is current using what is there. > > > > Aren't there now per-domain VM counters you can query via sysctl? > Maybe they'd help in diagnosing what's going on. >
I upgraded to a r335642 yesterday. I haven't seen the swapping problem, yet; although I've tried to force it. There are 158 sysctl knobs that contain the string "vm". Do you have a pointer any particular one to monitor? -- Steve _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
