From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id 84CBA6B0169 for ; Fri, 29 Jul 2011 09:42:24 -0400 (EDT) Received: by pzk33 with SMTP id 33so6676151pzk.36 for ; Fri, 29 Jul 2011 06:42:19 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20110729095005.GH1843@barrios-desktop> References: <1311265730-5324-1-git-send-email-mgorman@suse.de> <20110727161821.GA1738@barrios-desktop> <20110728113852.GN3010@suse.de> <20110729094816.GG1843@barrios-desktop> <20110729095005.GH1843@barrios-desktop> From: Andrew Lutomirski Date: Fri, 29 Jul 2011 09:41:59 -0400 Message-ID: Subject: Re: [RFC PATCH 0/8] Reduce filesystem writeback from page reclaim v2 Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: Mel Gorman , Linux-MM , LKML , XFS , Dave Chinner , Christoph Hellwig , Johannes Weiner , Wu Fengguang , Jan Kara , Rik van Riel On Fri, Jul 29, 2011 at 5:50 AM, Minchan Kim wrote: > Sorry for missing Ccing. > > On Fri, Jul 29, 2011 at 06:48:16PM +0900, Minchan Kim wrote: >> On Thu, Jul 28, 2011 at 12:38:52PM +0100, Mel Gorman wrote: >> > On Thu, Jul 28, 2011 at 01:18:21AM +0900, Minchan Kim wrote: >> > > On Thu, Jul 21, 2011 at 05:28:42PM +0100, Mel Gorman wrote: >> > > > Note how preventing kswapd reclaiming dirty pages pushes up its CPU >> >> >> >> > > > usage as it scans more pages but it does not get excessive due to >> > > > the throttling. >> > > >> > > Good to hear. >> > > The concern of this patchset was early OOM kill with too many scanning. >> > > I can throw such concern out from now on. >> > > >> > >> > At least, I haven't been able to trigger a premature OOM. >> >> AFAIR, Andrew had a premature OOM problem[1] but I couldn't track down at that time. >> I think this patch series might solve his problem. Although it doesn't, it should not accelerate >> his problem, at least. >> >> Andrew, Could you test this patchset? Gladly, but not until Wednesday most likely. I'm defending my thesis on Monday :) --Andy -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org