Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750807AbXBWDdc (ORCPT ); Thu, 22 Feb 2007 22:33:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750808AbXBWDdc (ORCPT ); Thu, 22 Feb 2007 22:33:32 -0500 Received: from mx1.redhat.com ([66.187.233.31]:55978 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750807AbXBWDdc (ORCPT ); Thu, 22 Feb 2007 22:33:32 -0500 Message-ID: <45DE6080.6030904@redhat.com> Date: Thu, 22 Feb 2007 22:33:20 -0500 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Thunderbird 1.5.0.7 (X11/20061008) MIME-Version: 1.0 To: yunfeng zhang CC: linux-kernel@vger.kernel.org, Hugh Dickins , linux-mm@kvack.org Subject: Re: [PATCH 2.6.20-rc5 1/1] MM: enhance Linux swap subsystem References: <4df04b840701212309l2a283357jbdaa88794e5208a7@mail.gmail.com> <4df04b840701222021w5e1aaab2if2ba7fc38d06d64b@mail.gmail.com> <4df04b840701222108o6992933bied5fff8a525413@mail.gmail.com> <4df04b840701301852i41687edfl1462c4ca3344431c@mail.gmail.com> <4df04b840702122152o64b2d59cy53afcd43bb24cb7a@mail.gmail.com> <4df04b840702200106q670ff944k118d218fed17b884@mail.gmail.com> <4df04b840702211758t1906083x78fb53b6283349ca@mail.gmail.com> <45DCFDBE.50209@redhat.com> <4df04b840702221831x76626de1rfa70cb653b12f495@mail.gmail.com> In-Reply-To: <4df04b840702221831x76626de1rfa70cb653b12f495@mail.gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 774 Lines: 19 yunfeng zhang wrote: > Performance improvement should occur when private pages of multiple > processes are messed up, Ummm, yes. Linux used to do this, but doing virtual scans just does not scale when a system has a really large amount of memory, a large number of processes and multiple zones. We've seen it fall apart with as little as 8GB of RAM. -- Politics is the struggle between those who want to make their country the best in the world, and those who believe it already is. Each group calls the other unpatriotic. - 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/