From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx128.postini.com [74.125.245.128]) by kanga.kvack.org (Postfix) with SMTP id 7DE9F6B002B for ; Tue, 18 Dec 2012 04:56:26 -0500 (EST) Date: Tue, 18 Dec 2012 09:56:21 +0000 From: Mel Gorman Subject: Re: [patch 1/7] mm: memcg: only evict file pages when we have plenty Message-ID: <20121218095621.GJ9887@suse.de> References: <1355767957-4913-1-git-send-email-hannes@cmpxchg.org> <1355767957-4913-2-git-send-email-hannes@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <1355767957-4913-2-git-send-email-hannes@cmpxchg.org> Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner Cc: Andrew Morton , Rik van Riel , Michal Hocko , Hugh Dickins , Satoru Moriya , linux-mm@kvack.org, linux-kernel@vger.kernel.org On Mon, Dec 17, 2012 at 01:12:31PM -0500, Johannes Weiner wrote: > e986850 "mm, vmscan: only evict file pages when we have plenty" makes > a point of not going for anonymous memory while there is still enough > inactive cache around. > > The check was added only for global reclaim, but it is just as useful > to reduce swapping in memory cgroup reclaim: > > 200M-memcg-defconfig-j2 > > vanilla patched > Real time 454.06 ( +0.00%) 453.71 ( -0.08%) > User time 668.57 ( +0.00%) 668.73 ( +0.02%) > System time 128.92 ( +0.00%) 129.53 ( +0.46%) > Swap in 1246.80 ( +0.00%) 814.40 ( -34.65%) > Swap out 1198.90 ( +0.00%) 827.00 ( -30.99%) > Pages allocated 16431288.10 ( +0.00%) 16434035.30 ( +0.02%) > Major faults 681.50 ( +0.00%) 593.70 ( -12.86%) > THP faults 237.20 ( +0.00%) 242.40 ( +2.18%) > THP collapse 241.20 ( +0.00%) 248.50 ( +3.01%) > THP splits 157.30 ( +0.00%) 161.40 ( +2.59%) > > Signed-off-by: Johannes Weiner > Acked-by: Michal Hocko Acked-by: Mel Gorman -- Mel Gorman SUSE Labs -- 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