Messages in this thread | | | From | Shakeel Butt <> | Date | Fri, 10 Jul 2020 20:24:47 -0700 | Subject | Re: [PATCH] mm: vmscan: consistent update to pgrefill |
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On Fri, Jul 10, 2020 at 7:32 PM Roman Gushchin <guro@fb.com> wrote: > > On Fri, Jul 10, 2020 at 06:14:59PM -0700, Shakeel Butt wrote: > > The vmstat pgrefill is useful together with pgscan and pgsteal stats to > > measure the reclaim efficiency. However vmstat's pgrefill is not updated > > consistently at system level. It gets updated for both global and memcg > > reclaim however pgscan and pgsteal are updated for only global reclaim. > > So, update pgrefill only for global reclaim. If someone is interested in > > the stats representing both system level as well as memcg level reclaim, > > then consult the root memcg's memory.stat instead of /proc/vmstat. > > > > Signed-off-by: Shakeel Butt <shakeelb@google.com> > > So you went into the opposite direction from the "previous version" > ( https://lkml.org/lkml/2020/5/7/1464 ) ? >
Yes because we already had those stats in the root memcg and exposing root memcg's memory.stat resolved the issue.
> Acked-by: Roman Gushchin <guro@fb.com>
Thanks a lot.
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