From: Pekka Enberg <penberg@kernel.org>
Subject: Re: [PATCH 3/3] mm: slub: Default slub_max_order to 0
Date: Thu, 12 May 2011 20:11:05 +0300
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Cc: Christoph Lameter <cl@linux.com>, Dave Jones <davej@redhat.com>, Mel Gorman <mgorman@suse.de>,
	Andrew Morton <akpm@linux-foundation.org>, Colin King <colin.king@canonical.com>,
	Raghavendra D Prabhu <raghu.prabhu13@gmail.com>, Jan Kara <jack@suse.cz>,
	Chris Mason <chris.mason@oracle.com>, Rik van Riel <riel@redhat.com>,
	Johannes Weiner <hannes@cmpxchg.org>, linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>, linux-kernel <linux-kernel@vger.kernel.org>,
	linux-ext4 <linux-ext4@vger.kernel.org>, Andrea Arcangeli <aarcange@redhat.com>
To: James Bottomley <James.Bottomley@hansenpartnership.com>
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On Thu, May 12, 2011 at 8:06 PM, Pekka Enberg <penberg@kernel.org> wrote:
> On Thu, May 12, 2011 at 7:30 PM, James Bottomley
> <James.Bottomley@hansenpartnership.com> wrote:
>> So suggest an alternative root cause and a test to expose it.
>
> Is your .config available somewhere, btw?

If it's this:

http://pkgs.fedoraproject.org/gitweb/?p=kernel.git;a=blob_plain;f=config-x86_64-generic;hb=HEAD

I'd love to see what happens if you disable

CONFIG_TRANSPARENT_HUGEPAGE=y

because that's going to reduce high order allocations as well, no?

                        Pekka

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