From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id 7FECE600429 for ; Sun, 1 Aug 2010 22:30:15 -0400 (EDT) Date: Mon, 2 Aug 2010 10:30:08 +0800 From: Wu Fengguang Subject: Re: [PATCH 6/6] vmscan: Kick flusher threads to clean pages when reclaim is encountering dirty pages Message-ID: <20100802023008.GA13035@localhost> References: <1280497020-22816-1-git-send-email-mel@csn.ul.ie> <1280497020-22816-7-git-send-email-mel@csn.ul.ie> <20100730150601.199c5618.akpm@linux-foundation.org> <20100801115640.GA18943@localhost> <20100801130300.GA19523@localhost> <80868B70-B17D-4007-AA15-5C11F0F95353@xyke.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <80868B70-B17D-4007-AA15-5C11F0F95353@xyke.com> Sender: owner-linux-mm@kvack.org To: Sean Jensen-Grey Cc: Andrew Morton , Mel Gorman , "linux-kernel@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" , Dave Chinner , Chris Mason , Nick Piggin , Rik van Riel , Johannes Weiner , Jens Axboe , Christoph Hellwig , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Andrea Arcangeli , pvz@pvz.pp.se, bgamari@gmail.com, larppaxyz@gmail.com, kernel-bugs.dev1world@spamgourmet.com, akatopaz@gmail.com, frankrq2009@gmx.com, thomas.pi@arcor.de, spawels13@gmail.com, vshader@gmail.com, rockorequin@hotmail.com, ylalym@gmail.com, theholyettlz@googlemail.com, hassium@yandex.ru List-ID: Hi Sean, On Mon, Aug 02, 2010 at 10:17:27AM +0800, Sean Jensen-Grey wrote: > Wu, > > Thank you for doing this. This still bites me on a weekly basis. I don't have much time to test the patches this week, but I should get access to an identical box week after next. That's OK. > BTW, I experience the issues even with 8-10GB of free ram. I have 12GB currently. Thanks for the important information. It means the patches proposed are not likely to help your case. In Comment #47 for bug 12309, your kernel 2.6.27 is too old though. You may well benefit from Jens' CFQ low latency improvements if switching to a recent kernel. Thanks, Fengguang -- 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/ . Don't email: email@kvack.org