From: Christoph Lameter <cl@linux.com>
Subject: Re: [PATCH 3/3] mm: slub: Default slub_max_order to 0
Date: Thu, 12 May 2011 13:03:05 -0500 (CDT)
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Cc: Pekka Enberg <penberg@kernel.org>,
  James Bottomley <James.Bottomley@hansenpartnership.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>
To: Andrea Arcangeli <aarcange@redhat.com>
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On Thu, 12 May 2011, Andrea Arcangeli wrote:

> even order 3 is causing troubles (which doesn't immediately make lumpy
> activated, it only activates when priority is < DEF_PRIORITY-2, so
> after 2 loops failing to reclaim nr_to_reclaim pages), imagine what

That is a significant change for SLUB with the merge of the compaction
code.

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