Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Fri, 20 May 2022 01:18:57 +0000
In-Reply-To: <30f5b95a-db87-3924-6ad0-4c302c924ff0@openvz.org>
Message-Id: <20220520011857.ggonbc32peagkhl2@google.com>
Mime-Version: 1.0
References: <Ynv7+VG+T2y9rpdk@carbon> <30f5b95a-db87-3924-6ad0-4c302c924ff0@openvz.org>
Subject: Re: [PATCH 4/4] memcg: enable accounting for allocations in alloc_fair_sched_group
From:   Shakeel Butt <shakeelb@google.com>
To:     Vasily Averin <vvs@openvz.org>
Cc:     Roman Gushchin <roman.gushchin@linux.dev>,
        "Michal =?utf-8?Q?Koutn=C3=BD?=" <mkoutny@suse.com>,
        kernel@openvz.org, linux-kernel@vger.kernel.org,
        Vlastimil Babka <vbabka@suse.cz>,
        Michal Hocko <mhocko@suse.com>, cgroups@vger.kernel.org
Content-Type: text/plain; charset="us-ascii"
Precedence: bulk

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@openvz.org>

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