linux-kernel - Re: [PATCH] mm, memcg: reclaim more aggressively before high allocator throttling

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Message-ID: <20200521122438.GC990580@chrisdown.name>
Date:   Thu, 21 May 2020 13:24:38 +0100
From:   Chris Down <chris@...isdown.name>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Tejun Heo <tj@...nel.org>, linux-mm@...ck.org,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH] mm, memcg: reclaim more aggressively before high
 allocator throttling

Chris Down writes:
>A cgroup is a unit and breaking it down into "reclaim fairness" for 
>individual tasks like this seems suspect to me. For example, if one 
>task in a cgroup is leaking unreclaimable memory like crazy, everyone 
>in that cgroup is going to be penalised by allocator throttling as a 
>result, even if they aren't "responsible" for that reclaim.

s/for that reclaim/for that overage/