linux-kernel - Re: [PATCH] memcg: oom: ignore oom warnings from memory.max

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Message-ID: <939b6744-6556-2733-b83e-bf14e848dabd@I-love.SAKURA.ne.jp>
Date:   Mon, 4 May 2020 23:20:05 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     Shakeel Butt <shakeelb@...gle.com>
Cc:     Michal Hocko <mhocko@...nel.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Roman Gushchin <guro@...com>, Greg Thelen <gthelen@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux MM <linux-mm@...ck.org>,
        Cgroups <cgroups@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] memcg: oom: ignore oom warnings from memory.max

On 2020/05/04 22:54, Shakeel Butt wrote:
> It may not be a problem for an individual or small scale deployment
> but when "sweep before tear down" is the part of the workflow for
> thousands of machines cycling through hundreds of thousands of cgroups
> then we can potentially flood the logs with not useful dumps and may
> hide (or overflow) any useful information in the logs.

I'm proposing a patch which allows configuring which OOM-related messages
should be sent to consoles at
https://lkml.kernel.org/r/20200424024239.63607-1-penguin-kernel@I-love.SAKURA.ne.jp .
Will that approach help you?