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Date: Mon, 16 Sep 2002 11:03:34 -0300 (BRT)
From: Rik van Riel <riel@conectiva.com.br>
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To: Helge Hafting <helgehaf@aitel.hist.no>
cc: linux-kernel@vger.kernel.org
Subject: Re: Killing/balancing processes when overcommited
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On Mon, 16 Sep 2002, Helge Hafting wrote:
> Rik van Riel wrote:
>
> > 1) memory is exhausted
> > 2) the network driver can't allocate memory and
> >    spits out a message
> > 3) syslogd and/or klogd get killed
> >
> > Clearly you want to be a bit smarter about which process to kill.
>
> Ill-implemented klogd/syslogd.  Pre-allocating a little memory
> is one way to go, or drop messages until allocation
> becomes possible again.  Then log a complaint about
> messages missing due to a temporary OOM.

No.  This has absolutely nothing to do with it.

In this case, "allocating memory" simply means that klogd/syslogd
page faults on something it already allocated, say a piece of the
executable or a swapped-out buffer.

Simple page faults like this can also trigger an OOM-killing.

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/		http://distro.conectiva.com/

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