Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759070AbZGAC5y (ORCPT ); Tue, 30 Jun 2009 22:57:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753495AbZGAC5r (ORCPT ); Tue, 30 Jun 2009 22:57:47 -0400 Received: from mx2.redhat.com ([66.187.237.31]:50414 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751016AbZGAC5q (ORCPT ); Tue, 30 Jun 2009 22:57:46 -0400 Message-ID: <4A4AD07E.2040508@redhat.com> Date: Tue, 30 Jun 2009 22:57:02 -0400 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Thunderbird 2.0.0.17 (X11/20080915) MIME-Version: 1.0 To: KOSAKI Motohiro CC: Wu Fengguang , David Woodhouse , David Howells , Minchan Kim , Mel Gorman , Johannes Weiner , Andrew Morton , LKML , Christoph Lameter , "peterz@infradead.org" , "tytso@mit.edu" , "linux-mm@kvack.org" , "elladan@eskimo.com" , "npiggin@suse.de" , "Barnes, Jesse" Subject: Re: Found the commit that causes the OOMs References: <20090701021645.GA6356@localhost> <20090701022644.GA7510@localhost> <20090701114959.85D3.A69D9226@jp.fujitsu.com> In-Reply-To: <20090701114959.85D3.A69D9226@jp.fujitsu.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 867 Lines: 23 KOSAKI Motohiro wrote: >> [ 1522.019259] Active_anon:11 active_file:6 inactive_anon:0 >> [ 1522.019260] inactive_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 >> [ 1522.019261] free:1985 slab:44399 mapped:132 pagetables:61830 bounce:0 >> [ 1522.019262] isolate:69817 > > OK. thanks. > I plan to submit this patch after small more tests. it is useful for OOM analysis. It is also useful for throttling page reclaim. If more than half of the inactive pages in a zone are isolated, we are probably beyond the point where adding additional reclaim processes will do more harm than good. -- All rights reversed. -- 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/