Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933606AbXBYBrn (ORCPT ); Sat, 24 Feb 2007 20:47:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933608AbXBYBrn (ORCPT ); Sat, 24 Feb 2007 20:47:43 -0500 Received: from wx-out-0506.google.com ([66.249.82.228]:9746 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933606AbXBYBrm (ORCPT ); Sat, 24 Feb 2007 20:47:42 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=AoDlUQKhixLnRLr+ktxePhl5sX/zjwjLVD/FciZwGINaBJzqzmtdDVUzjmyplNaPkhEYE0L/1EQo7KuAtLEgqKEjuvf5jHV9f/Iwirl6g18PkIMrL2e96+Qc3rWyLuKLF1h5H/NihIdwLi9UQfI/aouOiPnvVug7LEhwWf21bV8= Message-ID: <4df04b840702241747ne903699w636d37b40351b752@mail.gmail.com> Date: Sun, 25 Feb 2007 09:47:41 +0800 From: "yunfeng zhang" To: "Rik van Riel" Subject: Re: [PATCH 2.6.20-rc5 1/1] MM: enhance Linux swap subsystem Cc: linux-kernel@vger.kernel.org, "Hugh Dickins" , linux-mm@kvack.org In-Reply-To: <45DE6080.6030904@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <4df04b840701212309l2a283357jbdaa88794e5208a7@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> <45DE6080.6030904@redhat.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 497 Lines: 13 To a two-CPU architecture, its page distribution just like theoretically ABABAB.... So every readahead of A process will create 4 unused readahead pages unless you are sure B will resume soon. Have you ever compared the results among UP, 2 or 4-CPU? - 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/