From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with SMTP id 8BBF86B01AC for ; Mon, 5 Jul 2010 20:36:46 -0400 (EDT) Received: from m3.gw.fujitsu.co.jp ([10.0.50.73]) by fgwmail6.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id o660ailL018241 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Tue, 6 Jul 2010 09:36:44 +0900 Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id F404E45DE51 for ; Tue, 6 Jul 2010 09:36:43 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 9642045DE58 for ; Tue, 6 Jul 2010 09:36:43 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 33A651DB8043 for ; Tue, 6 Jul 2010 09:36:43 +0900 (JST) Received: from ml13.s.css.fujitsu.com (ml13.s.css.fujitsu.com [10.249.87.103]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id A0AC91DB803C for ; Tue, 6 Jul 2010 09:36:42 +0900 (JST) From: KOSAKI Motohiro Subject: Re: [PATCH 12/14] vmscan: Do not writeback pages in direct reclaim In-Reply-To: <20100705134949.GC13780@csn.ul.ie> References: <20100702125155.69c02f85.akpm@linux-foundation.org> <20100705134949.GC13780@csn.ul.ie> Message-Id: <20100706093529.CCD1.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Tue, 6 Jul 2010 09:36:41 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: kosaki.motohiro@jp.fujitsu.com, Andrew Morton , 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 , Christoph Hellwig , KAMEZAWA Hiroyuki , Andrea Arcangeli List-ID: Hello, > Ok, that's reasonable as I'm still working on that patch. For example, the > patch disabled anonymous page writeback which is unnecessary as the stack > usage for anon writeback is less than file writeback. How do we examine swap-on-file? > Second, using systemtap, > I was able to see that file-backed dirty pages have a tendency to be near the > end of the LRU even though they are a small percentage of the overall pages > in the LRU. I'm hoping to figure out why this is as it would make avoiding > writeback a lot less controversial. -- 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