linux-kernel - Re: oom-killer with 27G free swap and overcommit

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Message-Id: <200708280818.57608.a1426z@gawab.com>
Date:	Tue, 28 Aug 2007 08:18:57 +0300
From:	Al Boldi <a1426z@...ab.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: oom-killer with 27G free swap and overcommit_memory=2

Patrick J. LoPresti wrote:
> My system is a SunFire x4100 (x86_64) with 16G of RAM and 32G of swap
> in a single partition.  I have an application which consumes a lot of
> memory, and after a few hours the oom-killer kills it.
> 
> This would not be surprising, except a) the machine still has 27G of
> free swap at the time; and b) it happens even when I set
> vm.overcommit_memory=2 (with overcommit_ratio=50).  It is
> time-consuming to reproduce, but consistent.
:
:
> 2) Is there any sysctl setting that might "avoid" this problem?  Or a
> way to change my application to avoid it?

Try setting the overcommit_ratio=0.


Thanks!

--
Al

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