linux-kernel - Re: [PATCH 4/4] memcg: enable accounting for allocations in alloc_fair_sched

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Message-Id: <20220520011857.ggonbc32peagkhl2@google.com>
Date:   Fri, 20 May 2022 01:18:57 +0000
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Vasily Averin <vvs@...nvz.org>
Cc:     Roman Gushchin <roman.gushchin@...ux.dev>,
        "Michal Koutný" <mkoutny@...e.com>,
        kernel@...nvz.org, linux-kernel@...r.kernel.org,
        Vlastimil Babka <vbabka@...e.cz>,
        Michal Hocko <mhocko@...e.com>, cgroups@...r.kernel.org
Subject: Re: [PATCH 4/4] memcg: enable accounting for allocations in alloc_fair_sched_group

On Fri, May 13, 2022 at 06:52:20PM +0300, Vasily Averin wrote:
> Creating of each new cpu cgroup allocates two 512-bytes kernel objects
> per CPU. This is especially important for cgroups shared parent memory
> cgroup. In this scenario, on nodes with multiple processors, these
> allocations become one of the main memory consumers.
> 
> Accounting for this memory helps to avoid misuse inside memcg-limited
> contianers.
> 
> Signed-off-by: Vasily Averin <vvs@...nvz.org>

Acked-by: Shakeel Butt <shakeelb@...gle.com>