linux-kernel - Re: [PATCH 2/2] log out-of-virtual-memory events

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Date:	Mon, 21 May 2007 12:48:33 +0200 (MEST)
From:	Andrea Righi <righiandr@...rs.sourceforge.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Bernd Eckenfels <ecki@...a.inka.de>, linux-kernel@...r.kernel.org,
	Rik van Riel <riel@...hat.com>, linux-mm@...ck.org,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 2/2] log out-of-virtual-memory events

Andrew Morton wrote:
> On Sat, 19 May 2007 12:34:01 +0200 (MEST) Andrea Righi <righiandr@...rs.sourceforge.net> wrote:
> 
>> Print informations about userspace processes that fail to allocate new virtual
>> memory.
> 
> Why is this useful?
> 

Well... in strict overcommit mode (overcommit_memory=2) this is the only way to
track down problems of the (bad-designed) user applications that exit when they
receive a -ENOMEM without logging anything... and, anyway, it could be an
additional aid in figuring out what is going wrong on inside a system. BTW, I
don't think it should be enabled by default, so this is the reason why it should
depend on print_fatal_signals patch.

-Andrea
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