Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753878AbZKMNhq (ORCPT ); Fri, 13 Nov 2009 08:37:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752454AbZKMNhj (ORCPT ); Fri, 13 Nov 2009 08:37:39 -0500 Received: from gir.skynet.ie ([193.1.99.77]:48444 "EHLO gir.skynet.ie" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752171AbZKMNhi (ORCPT ); Fri, 13 Nov 2009 08:37:38 -0500 Date: Fri, 13 Nov 2009 13:37:41 +0000 From: Mel Gorman To: Tobias Oetiker Cc: Andrew Morton , Frans Pop , Jiri Kosina , Sven Geggus , Karol Lewandowski , linux-kernel@vger.kernel.org, "linux-mm@kvack.org" , KOSAKI Motohiro , Pekka Enberg , Rik van Riel , Christoph Lameter , Stephan von Krawczynski , "Rafael J. Wysocki" , Kernel Testers List Subject: Re: [PATCH 0/5] Reduce GFP_ATOMIC allocation failures, candidate fix V3 Message-ID: <20091113133740.GD29804@csn.ul.ie> References: <1258054235-3208-1-git-send-email-mel@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17+20080114 (2008-01-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1296 Lines: 32 On Fri, Nov 13, 2009 at 01:47:35PM +0100, Tobias Oetiker wrote: > Hi Mel, > > Yesterday Mel Gorman wrote: > > > Sorry for the long delay in posting another version. Testing is extremely > > time-consuming and I wasn't getting to work on this as much as I'd have liked. > > > > Changelog since V2 > > o Dropped the kswapd-quickly-notice-high-order patch. In more detailed > > testing, it made latencies even worse as kswapd slept more on high-order > > congestion causing order-0 direct reclaims. > > o Added changes to how congestion_wait() works > > o Added a number of new patches altering the behaviour of reclaim > > so is there anything promissing for the order 5 allocation problems > in this set? > Yes. While the change in timing of direct reclaimers might be less important when dm-crypt is not involved, kswapd is more pro-active about maintaining the watermarks. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/