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Date: Thu, 26 Feb 2009 11:28:03 -0500 (EST)
From: Christoph Lameter <cl@linux-foundation.org>
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To: Pekka Enberg <penberg@cs.helsinki.fi>
cc: Mel Gorman <mel@csn.ul.ie>, Lin Ming <ming.m.lin@intel.com>,
       Linux Memory Management List <linux-mm@kvack.org>,
       Rik van Riel <riel@redhat.com>,
       KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       Johannes Weiner <hannes@cmpxchg.org>, Nick Piggin <npiggin@suse.de>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Zhang Yanmin <yanmin_zhang@linux.intel.com>,
       Peter Zijlstra <peterz@infradead.org>
Subject: Re: [RFC PATCH 00/19] Cleanup and optimise the page allocator V2
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On Thu, 26 Feb 2009, Pekka Enberg wrote:

> > > UDP-U-4k	-2%		0%		-2%
> >
> > Pekka, for this test was SLUB or the page allocator handling the 4K
> > allocations?
>
> The page allocator. The pass-through revert is not in 2.6.29-rc6 and I
> won't be sending it until 2.6.30 opens up.

The page allocator will handle allocs >4k. 4k itself is already buffered
since we saw tbench regressions if we passed 4k through.