linux-kernel - Re: oom killer and long-waiting processes

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Message-ID: <AANLkTinXqriwgslQwjmjYaGjiyVK4oh1HZcTwxgWCZkh@mail.gmail.com>
Date:	Thu, 10 Jun 2010 23:56:30 +0700
From:	Mulyadi Santosa <mulyadi.santosa@...il.com>
To:	Ryan Wang <openspace.wang@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	kernelnewbies@...linux.org
Subject: Re: oom killer and long-waiting processes

Hi

On Thu, Jun 10, 2010 at 14:17, Ryan Wang <openspace.wang@...il.com> wrote:
> Hi all,
>
>        I have one question about oom killer:
> If many processes dealing with network communications,
> but due to bad network traffic, the processes have to wait
> for a very long time. And meanwhile they may consume
> some memeory separately for computation. The number
> of such processes may be large.


Please refer to my article here :
http://linuxdevcenter.com/pub/a/linux/2006/11/30/linux-out-of-memory.html

Right now, I can not recall entirely about the rules, but IIRC the
processes that do I/O get lower "score". But that doesn't mean it
won't be killed if free memory amount is really low...

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
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