Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754078Ab0HCDdH (ORCPT ); Mon, 2 Aug 2010 23:33:07 -0400 Received: from alpha.arachsys.com ([91.203.57.7]:39777 "EHLO alpha.arachsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753384Ab0HCDdF (ORCPT ); Mon, 2 Aug 2010 23:33:05 -0400 Date: Tue, 3 Aug 2010 04:31:10 +0100 From: Chris Webb To: Minchan Kim Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, KOSAKI Motohiro , Wu Fengguang Subject: Re: Over-eager swapping Message-ID: <20100803033108.GA23117@arachsys.com> References: <20100802124734.GI2486@arachsys.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 845 Lines: 28 Minchan Kim writes: > Another possibility is _zone_reclaim_ in NUMA. > Your working set has many anonymous page. > > The zone_reclaim set priority to ZONE_RECLAIM_PRIORITY. > It can make reclaim mode to lumpy so it can page out anon pages. > > Could you show me /proc/sys/vm/[zone_reclaim_mode/min_unmapped_ratio] ? Sure, no problem. On the machine with the /proc/meminfo I showed earlier, these are # cat /proc/sys/vm/zone_reclaim_mode 0 # cat /proc/sys/vm/min_unmapped_ratio 1 I haven't changed either of these from the kernel default. Many thanks, Chris. -- 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/