From: Johannes Weiner <hannes@cmpxchg.org>
To: Roman Gushchin <guro@fb.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Dennis Zhou <dennis@kernel.org>, Tejun Heo <tj@kernel.org>,
Christoph Lameter <cl@linux.com>,
Michal Hocko <mhocko@kernel.org>,
Shakeel Butt <shakeelb@google.com>,
linux-mm@kvack.org, kernel-team@fb.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 3/5] mm: memcg/percpu: per-memcg percpu memory statistics
Date: Tue, 11 Aug 2020 11:05:05 -0400 [thread overview]
Message-ID: <20200811150505.GA650506@cmpxchg.org> (raw)
In-Reply-To: <20200623184515.4132564-4-guro@fb.com>
On Tue, Jun 23, 2020 at 11:45:13AM -0700, Roman Gushchin wrote:
> Percpu memory can represent a noticeable chunk of the total memory
> consumption, especially on big machines with many CPUs. Let's track
> percpu memory usage for each memcg and display it in memory.stat.
>
> A percpu allocation is usually scattered over multiple pages (and nodes),
> and can be significantly smaller than a page. So let's add a byte-sized
> counter on the memcg level: MEMCG_PERCPU_B. Byte-sized vmstat infra
> created for slabs can be perfectly reused for percpu case.
>
> Signed-off-by: Roman Gushchin <guro@fb.com>
> Acked-by: Dennis Zhou <dennis@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
next prev parent reply other threads:[~2020-08-11 15:06 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200623184515.4132564-1-guro@fb.com>
[not found] ` <20200623184515.4132564-2-guro@fb.com>
2020-06-24 0:58 ` [PATCH v3 1/5] percpu: return number of released bytes from pcpu_free_area() Shakeel Butt
[not found] ` <20200623184515.4132564-3-guro@fb.com>
2020-06-24 1:25 ` [PATCH v3 2/5] mm: memcg/percpu: account percpu memory to memory cgroups Shakeel Butt
[not found] ` <20200623184515.4132564-4-guro@fb.com>
2020-06-24 1:35 ` [PATCH v3 3/5] mm: memcg/percpu: per-memcg percpu memory statistics Shakeel Butt
2020-08-11 15:05 ` Johannes Weiner [this message]
[not found] ` <20200623184515.4132564-5-guro@fb.com>
2020-06-24 1:40 ` [PATCH v3 4/5] mm: memcg: charge memcg percpu memory to the parent cgroup Shakeel Butt
2020-06-24 1:49 ` Roman Gushchin
2020-07-29 17:10 ` Michal Koutný
2020-08-07 4:16 ` Andrew Morton
2020-08-07 4:37 ` Roman Gushchin
2020-08-10 19:33 ` Roman Gushchin
2020-08-11 14:47 ` Michal Koutný
2020-08-11 16:55 ` Roman Gushchin
2020-08-11 18:32 ` Michal Koutný
2020-08-11 19:32 ` Roman Gushchin
2020-08-12 16:28 ` Michal Koutný
2020-08-11 15:27 ` Johannes Weiner
2020-08-11 17:06 ` Roman Gushchin
2020-08-13 9:16 ` Naresh Kamboju
2020-08-13 23:27 ` Stephen Rothwell
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