From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759672Ab2HIUbv (ORCPT ); Thu, 9 Aug 2012 16:31:51 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59706 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759531Ab2HIUbt (ORCPT ); Thu, 9 Aug 2012 16:31:49 -0400 Message-ID: <50241DC5.7090704@redhat.com> Date: Thu, 09 Aug 2012 16:29:57 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120605 Thunderbird/13.0 MIME-Version: 1.0 To: Mel Gorman CC: Minchan Kim , Linux-MM , Jim Schutt , LKML Subject: Re: [PATCH 2/6] mm: vmscan: Scale number of pages reclaimed by reclaim/compaction based on failures References: <1344342677-5845-1-git-send-email-mgorman@suse.de> <1344342677-5845-3-git-send-email-mgorman@suse.de> <20120808014824.GB4247@bbox> <20120808075526.GI29814@suse.de> <20120808082738.GF4247@bbox> <20120808085112.GJ29814@suse.de> <20120808235127.GA17835@bbox> <20120809074949.GA12690@suse.de> <20120809082715.GA19802@bbox> <20120809092035.GD12690@suse.de> In-Reply-To: <20120809092035.GD12690@suse.de> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/09/2012 05:20 AM, Mel Gorman wrote: > The intention is that an allocation can fail but each subsequent attempt will > try harder until there is success. Each allocation request does a portion > of the necessary work to spread the cost between multiple requests. At some point we need to stop doing that work, though. Otherwise we could end up back at the problem where way too much memory gets evicted, and we get swap storms.