linux-kernel - Re: [patch] mm, oom: base root bonus on current usage

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Message-ID: <alpine.DEB.2.02.1401291628340.22974@chino.kir.corp.google.com>
Date:	Wed, 29 Jan 2014 16:35:36 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch] mm, oom: base root bonus on current usage

On Wed, 29 Jan 2014, Andrew Morton wrote:

> This changelog has deteriorated :( We should provide sufficient info so
> that people will be able to determine whether this patch will fix a
> problem they or their customers are observing.  And so that people who
> maintain -stable and its derivatives can decide whether to backport it.
> 
> I went back and stole some text from the v1 patch.  Please review the
> result.  The changelog would be even better if it were to describe the
> new behaviour under the problematic workloads.
> 

The new changelog looks fine with the exception of the mention of sshd 
which typically sets itself to be disabled from oom killing altogether.

> We don't think -stable needs this?
> 

Nobody has reported it in over three years as causing an issue, probably 
because people typically have enough memory that oom kills don't come from 
a ton of small processes allocating memory that can't be reclaimed, 
there's usually at least one large process to kill.
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