From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id 8BA9C90010B for ; Fri, 13 May 2011 05:53:12 -0400 (EDT) Date: Fri, 13 May 2011 11:53:08 +0200 From: Michal Hocko Subject: Re: [rfc patch 3/6] mm: memcg-aware global reclaim Message-ID: <20110513095308.GD25304@tiehlicka.suse.cz> References: <1305212038-15445-1-git-send-email-hannes@cmpxchg.org> <1305212038-15445-4-git-send-email-hannes@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1305212038-15445-4-git-send-email-hannes@cmpxchg.org> Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner Cc: KAMEZAWA Hiroyuki , Daisuke Nishimura , Balbir Singh , Ying Han , Andrew Morton , Rik van Riel , Minchan Kim , KOSAKI Motohiro , Mel Gorman , linux-mm@kvack.org, linux-kernel@vger.kernel.org On Thu 12-05-11 16:53:55, Johannes Weiner wrote: > A page charged to a memcg is linked to a lru list specific to that > memcg. At the same time, traditional global reclaim is obvlivious to > memcgs, and all the pages are also linked to a global per-zone list. > > This patch changes traditional global reclaim to iterate over all > existing memcgs, so that it no longer relies on the global list being > present. At LSF we have discussed that we should keep a list of over-(soft)limit cgroups in a list which would be the first target for reclaiming (in round-robin fashion). If we are note able to reclaim enough from those (the list becomes empty) we should fallback to the all groups reclaim (what you did in this patchset). -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- 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