linux-kernel - Re: [PATCH v2] mm,oom: exclude oom_task_origin processes if they are OOM-unkillable.

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Message-ID: <alpine.DEB.2.10.1602241334470.5955@chino.kir.corp.google.com>
Date:	Wed, 24 Feb 2016 13:36:28 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Michal Hocko <mhocko@...nel.org>
cc:	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	akpm@...ux-foundation.org, mgorman@...e.de, oleg@...hat.com,
	torvalds@...ux-foundation.org, hughd@...gle.com, andrea@...nel.org,
	riel@...hat.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm,oom: exclude oom_task_origin processes if they
 are OOM-unkillable.

On Wed, 24 Feb 2016, Michal Hocko wrote:

> Hmm, is it really helpful though? What would you deduce from seeing a
> large rss an OOM_SCORE_ADJ_MIN task? Misconfigured system? There must
> have been a reason to mark the task that way in the first place so you
> can hardly do anything about it. Moreover you can deduce the same from
> the available information.
> 

Users run processes that are vital to the machine with OOM_SCORE_ADJ_MIN.  
This does not make them immune to having memory leaks that caused the oom 
condition, and identifying that has triaged many bugs in the past.

Thanks.