Message-ID: <467008E9.7070902@nortel.com>
Date: Wed, 13 Jun 2007 09:10:33 -0600
From: "Chris Friesen" <cfriesen@nortel.com>
User-Agent: Mozilla Thunderbird 1.0.2-6 (X11/20050513)
MIME-Version: 1.0
To: Helge Hafting <helge.hafting@aitel.hist.no>
CC: John Sigler <linux.kernel@free.fr>, Andrea Arcangeli <andrea@suse.de>,
       linux-kernel@vger.kernel.org
Subject: Re: Runaway process and oom-killer
References: <466FAF99.3070708@free.fr> <20070613090837.GD7443@v2.random> <466FB6E8.8020606@free.fr> <466FF154.7030905@aitel.hist.no>
In-Reply-To: <466FF154.7030905@aitel.hist.no>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 853
Lines: 22

Helge Hafting wrote:

> My guess:
> Something needs memory but finds there is none to be had
> oom-killer is invoked and targets myapp.
> myapp takes some time to die. Particularly, the memory it uses
> isn't freed up instantly.

Has anyone considered actually bumping up the priority of the task being 
killed so that it gets to run and free up its resources in a timely manner?

We've done some experimenting with actually putting it in SCHED_RR and 
it seems to help (in the case of other busy SCHED_RR tasks on the 
system).  Admittedly we have an older kernel, so behaviour may be 
different now.

Chris
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/