linux-kernel - Re: Kernel 2.6.29 runs out of memory and hangs.

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Message-ID: <40a4ed590904270707p3a777adcv1e22e89ec0e0a8d7@mail.gmail.com>
Date:	Mon, 27 Apr 2009 16:07:36 +0200
From:	Zeno Davatz <zdavatz@...il.com>
To:	Greg Stark <gsstark@....edu>
Cc:	David Rientjes <rientjes@...gle.com>, linux-kernel@...r.kernel.org,
	Hannes Wyss <hwyss@...see.com>
Subject: Re: Kernel 2.6.29 runs out of memory and hangs.

On Mon, Apr 27, 2009 at 3:39 PM, Zeno Davatz <zdavatz@...il.com> wrote:
> On Mon, Apr 27, 2009 at 3:35 PM, Greg Stark <gsstark@....edu> wrote:
>> On Sun, Apr 26, 2009 at 8:55 PM, David Rientjes <rientjes@...gle.com> wrote:
>>> There is work being done on a per-cgroup lowmem notifier which would allow
>>> userspace to poll() on a device file and be notified of low memory
>>> situations so that it can react on its own (like killing a low priority
>>> task, expanding a cpuset, increasing a memcontroller limit, etc.)
>>
>> Surely anything that important ought to be running with overcommit
>> disabled anyways.
>
> Where do I enable or disable overcommit?

Ok, I found this one as well:

Documentation/vm/overcommit-accounting

and

http://www.linuxdevcenter.com/pub/a/linux/2006/11/30/linux-out-of-memory.html?page=2

is a useful article for the beginner.

Best
Zeno
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