linux-kernel - Re: coping with swap-exhaustion in 2.4.33-4

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Message-ID: <f36b08ee0611230608x297fe566mb5e97d5a180a7241@mail.gmail.com>
Date:	Thu, 23 Nov 2006 16:08:02 +0200
From:	"Yakov Lerner" <iler.ml@...il.com>
To:	"Xavier Bestel" <xavier.bestel@...e.fr>,
	Kernel <linux-kernel@...r.kernel.org>
Subject: Re: coping with swap-exhaustion in 2.4.33-4

On 11/23/06, Xavier Bestel <xavier.bestel@...e.fr> wrote:
> On Thu, 2006-11-23 at 14:30 +0200, Yakov Lerner wrote:
> >     Where can I read anything about how kernel is supposed to
> > react to the 'swap-full' condition ? We have troubles on the
> > production machine which routinely arrives to the swap-full state
> > no matter how I increase the swap, because user proceses multi-fork
> > and then want to allocate a lot of virtual memory.
>
> Did you disable memory overcommit ?

When I set overcommit to 1 (2.4 seems not to have 1 vs 2
distinction, am I right), then still root processes are killed
when non-root process is a memory hog. Is there an option
to have malloc return NULL and never kill a process when
malloc fails ?

Thanks
Yakov
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