From: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
To: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
Cc: Michal Hocko <mhocko-IBi9RG/b67k@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kernel-team-b10kYP2dOMg@public.gmane.org
Subject: Re: [PATCH] mm: memcontrol: add file_thp, shmem_thp to memory.stat
Date: Sun, 25 Oct 2020 11:37:25 -0700 [thread overview]
Message-ID: <20201025113725.b60f2b08d7331a31edf009a1@linux-foundation.org> (raw)
In-Reply-To: <20201022151844.489337-1-hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
On Thu, 22 Oct 2020 11:18:44 -0400 Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org> wrote:
> As huge page usage in the page cache and for shmem files proliferates
> in our production environment, the performance monitoring team has
> asked for per-cgroup stats on those pages.
>
> We already track and export anon_thp per cgroup. We already track file
> THP and shmem THP per node, so making them per-cgroup is only a matter
> of switching from node to lruvec counters. All callsites are in places
> where the pages are charged and locked, so page->memcg is stable.
>
> ...
>
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -1507,6 +1507,8 @@ static struct memory_stat memory_stats[] = {
> * constant(e.g. powerpc).
> */
> { "anon_thp", 0, NR_ANON_THPS },
> + { "file_thp", 0, NR_FILE_THPS },
> + { "shmem_thp", 0, NR_SHMEM_THPS },
Documentation/admin-guide/cgroup-v2.rst is owed an update?
next prev parent reply other threads:[~2020-10-25 18:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-22 15:18 [PATCH] mm: memcontrol: add file_thp, shmem_thp to memory.stat Johannes Weiner
2020-10-22 16:49 ` Rik van Riel
2020-10-22 16:57 ` Rik van Riel
2020-10-22 18:29 ` Johannes Weiner
[not found] ` <20201022151844.489337-1-hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2020-10-22 16:51 ` Shakeel Butt
2020-10-22 18:00 ` David Rientjes
2020-10-23 7:42 ` Michal Hocko
2020-10-25 18:37 ` Andrew Morton [this message]
[not found] ` <20201025113725.b60f2b08d7331a31edf009a1-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2020-10-26 17:40 ` Johannes Weiner
2020-10-26 20:24 ` Song Liu
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