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 89D6D6B0022 for ; Fri, 13 May 2011 00:19:52 -0400 (EDT) Date: Fri, 13 May 2011 13:15:14 +0900 From: Daisuke Nishimura Subject: Re: [PATCH][BUGFIX] memcg fix zone congestion Message-Id: <20110513131514.a7ec1328.nishimura@mxp.nes.nec.co.jp> In-Reply-To: <20110513121030.08fcae08.kamezawa.hiroyu@jp.fujitsu.com> References: <20110513121030.08fcae08.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: "linux-mm@kvack.org" , "akpm@linux-foundation.org" , "balbir@linux.vnet.ibm.com" , Ying Han , Johannes Weiner , Michal Hocko , Daisuke Nishimura On Fri, 13 May 2011 12:10:30 +0900 KAMEZAWA Hiroyuki wrote: > > ZONE_CONGESTED should be a state of global memory reclaim. > If not, a busy memcg sets this and give unnecessary throttoling in > wait_iff_congested() against memory recalim in other contexts. This makes > system performance bad. > hmm, nice catch. Just from my curiosity, is there any number of performance improvement by this patch? Thanks, Daisuke Nishimura. -- 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