linux-kernel - Re: [PATCH] oom: add sysctl to enable slab memory dump

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Message-ID: <20120222160429.GA1986@x61.redhat.com>
Date:	Wed, 22 Feb 2012 14:04:30 -0200
From:	Rafael Aquini <aquini@...hat.com>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	linux-mm@...ck.org, Randy Dunlap <rdunlap@...otime.net>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Matt Mackall <mpm@...enic.com>, Rik van Riel <riel@...hat.com>,
	Josef Bacik <josef@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] oom: add sysctl to enable slab memory dump

On Wed, Feb 22, 2012 at 03:17:23PM +0200, Pekka Enberg wrote:
> On Wed, Feb 22, 2012 at 1:53 PM, Rafael Aquini <aquini@...hat.com> wrote:
> > This, alongside with all other data dumped in OOM events, is very helpful
> > information in diagnosing why there was an OOM condition specially when
> > kernel code is under investigation.
> >
> > Signed-off-by: Rafael Aquini <aquini@...hat.com>
> 
> Makes sense. Do you have an example how an out-of-memory slab cache
> dump looks like?
> 
Yes I do have a couple of dumps taken from some dabbler testing I was
performing. Would it be interesting to introduce a sample at the commit message, or
among the Documentation paragraphs?


> Minor style nit: just define the zeroed variables in this block.
> 
I will adjust those.

Thanks for your feedback!
-- 
Rafael Aquini <aquini@...hat.com>
Software Maintenance Engineer
Red Hat, Inc.
+55 51 4063.9436 / 8426138 (ext)
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