Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758260Ab1EMK3U (ORCPT ); Fri, 13 May 2011 06:29:20 -0400 Received: from zene.cmpxchg.org ([85.214.230.12]:58454 "EHLO zene.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757363Ab1EMK3S (ORCPT ); Fri, 13 May 2011 06:29:18 -0400 Date: Fri, 13 May 2011 12:28:58 +0200 From: Johannes Weiner To: Michal Hocko 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 Subject: Re: [rfc patch 3/6] mm: memcg-aware global reclaim Message-ID: <20110513102858.GO16531@cmpxchg.org> References: <1305212038-15445-1-git-send-email-hannes@cmpxchg.org> <1305212038-15445-4-git-send-email-hannes@cmpxchg.org> <20110513095308.GD25304@tiehlicka.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110513095308.GD25304@tiehlicka.suse.cz> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1209 Lines: 24 On Fri, May 13, 2011 at 11:53:08AM +0200, Michal Hocko wrote: > 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). This would be on top or instead of 6/6. This, 3/6, is indepent of soft limit reclaim. It is mainly in preparation to remove the global LRU. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/