Re: [PATCH] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls

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To: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
Subject: Re: [PATCH] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sat, 31 Jul 2010 13:59:51 -0400
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Wu Fengguang <fengguang.wu@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, stable@xxxxxxxxxx, Rik van Riel <riel@xxxxxxxxxx>, KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>, Mel Gorman <mel@xxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-fsdevel@xxxxxxxxxxxxxxx" <linux-fsdevel@xxxxxxxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, Chris Mason <chris.mason@xxxxxxxxxx>, Nick Piggin <npiggin@xxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>, Andrea Arcangeli <aarcange@xxxxxxxxxx>, Minchan Kim <minchan.kim@xxxxxxxxx>, Andreas Mohr <andi@xxxxxxxx>, Bill Davidsen <davidsen@xxxxxxx>, Ben Gamari <bgamari.foss@xxxxxxxxx>, Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
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On Sat, Jul 31, 2010 at 08:55:57PM +0300, Pekka Enberg wrote:
> Do you have CONFIG_SLUB enabled? It does high order allocations by
> default for performance reasons.

Yes. This is a kernel using slub.

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References:
- [PATCH] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls
  - From: Wu Fengguang
- Re: [PATCH] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls
  - From: Wu Fengguang
- Re: [PATCH] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls
  - From: Christoph Hellwig
- Re: [PATCH] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls
  - From: Pekka Enberg

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