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From: Frans Pop <elendil@planet.nl>
Subject: Re: [PATCH 3/3] vmscan: Force kswapd to take notice faster when high-order watermarks are being hit
Date: Wed, 4 Nov 2009 03:08:56 +0100
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To: Mel Gorman <mel@csn.ul.ie>
Cc: Andrew Morton <akpm@linux-foundation.org>, stable@kernel.org, linux-kernel@vger.kernel.org, "linux-mm@kvack.org" <linux-mm@kvack.org>, Jiri Kosina <jkosina@suse.cz>, Sven Geggus <lists@fuchsschwanzdomain.de>, Karol Lewandowski <karol.k.lewandowski@gmail.com>, Tobias Oetiker <tobi@oetiker.ch>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Pekka Enberg <penberg@cs.helsinki.fi>, Rik van Riel <riel@redhat.com>, Christoph Lameter <cl@linux-foundation.org>, Stephan von Krawczynski <skraw@ithnet.com>, Kernel Testers List <kernel-testers@vger.kernel.org>
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On Wednesday 04 November 2009, Frans Pop wrote:
> The congestion_wait() change, even if theoretically valid, introduced a
> very real regression IMO. Such long desktop freezes during swapping
> should be avoided; .30 and earlier simply behaved a whole lot better in
> the same situation.

I'll see if your new patch helps for this case.

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