From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id 408C68D003B for ; Mon, 25 Apr 2011 06:21:20 -0400 (EDT) Received: from m3.gw.fujitsu.co.jp (unknown [10.0.50.73]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 2D0B83EE0BD for ; Mon, 25 Apr 2011 19:21:17 +0900 (JST) Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 0E7F845DE95 for ; Mon, 25 Apr 2011 19:21:17 +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 E945A45DE92 for ; Mon, 25 Apr 2011 19:21:16 +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 D9DD0E08003 for ; Mon, 25 Apr 2011 19:21:16 +0900 (JST) Received: from m106.s.css.fujitsu.com (m106.s.css.fujitsu.com [10.240.81.146]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id A51391DB8038 for ; Mon, 25 Apr 2011 19:21:16 +0900 (JST) Date: Mon, 25 Apr 2011 19:14:37 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH 0/7] memcg background reclaim , yet another one. Message-Id: <20110425191437.d881ee68.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20110425182529.c7c37bb4.kamezawa.hiroyu@jp.fujitsu.com> References: <20110425182529.c7c37bb4.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: KAMEZAWA Hiroyuki Cc: Ying Han , "linux-mm@kvack.org" , "kosaki.motohiro@jp.fujitsu.com" , "balbir@linux.vnet.ibm.com" , "nishimura@mxp.nes.nec.co.jp" , "akpm@linux-foundation.org" , Johannes Weiner , "minchan.kim@gmail.com" , Michal Hocko On Mon, 25 Apr 2011 18:25:29 +0900 KAMEZAWA Hiroyuki wrote: > 2) == hard limit 500M/ hi_watermark = 400M == > [root@rhel6-test hilow]# time cp ./tmpfile xxx > > real 0m6.421s > user 0m0.059s > sys 0m2.707s > When doing this, we see usage changes as (sec) (bytes) 0: 401408 <== cp start 1: 98603008 2: 262705152 3: 433491968 <== wmark reclaim triggerd. 4: 486502400 5: 507748352 6: 524189696 <== cp ends (and hit limits) 7: 501231616 8: 499511296 9: 477118464 10: 417980416 <== usage goes below watermark. 11: 417980416 ..... If we have dirty_ratio, this result will be some different. (and flusher thread will work sooner...) Thanks, -Kame -- 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