From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030396AbVKCSAF (ORCPT ); Thu, 3 Nov 2005 13:00:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030399AbVKCSAE (ORCPT ); Thu, 3 Nov 2005 13:00:04 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:64947 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1030396AbVKCSAD (ORCPT ); Thu, 3 Nov 2005 13:00:03 -0500 Subject: Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 From: Arjan van de Ven To: "Martin J. Bligh" Cc: Linus Torvalds , Mel Gorman , Nick Piggin , Dave Hansen , Ingo Molnar , Andrew Morton , kravetz@us.ibm.com, linux-mm , Linux Kernel Mailing List , lhms , Arjan van de Ven In-Reply-To: <311050000.1131040276@[10.10.2.4]> References: <4366C559.5090504@yahoo.com.au> <4366D469.2010202@yahoo.com.au> <20051101135651.GA8502@elte.hu> <1130854224.14475.60.camel@localhost><20051101142959.GA9272@elte.hu> <1130856555.14475.77.camel@localhost><20051101150142.GA10636@elte.hu> <1130858580.14475.98.camel@localhost><20051102084946.GA3930@elte.hu> <436880B8.1050207@yahoo.com.au><1130923969.15627.11.camel@localhost> <43688B74.20002@yahoo.com.au><255360000.1130943722@[10.10.2.4]> <4369824E.2020407@yahoo.com.au> <306020000.1131032193@[10.10.2.4]> <1131032422.2839.8.camel@laptopd505.fenrus.org> <309420000.1131036740@[10.10.2.4]> <311050000.1131040276@[10.10.2.4]> Content-Type: text/plain Date: Thu, 03 Nov 2005 18:59:45 +0100 Message-Id: <1131040786.2839.18.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Content-Transfer-Encoding: 7bit X-Spam-Score: 2.9 (++) X-Spam-Report: SpamAssassin version 3.0.4 on pentafluge.infradead.org summary: Content analysis details: (2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.1 RCVD_IN_SORBS_DUL RBL: SORBS: sent directly from dynamic IP address [80.57.133.107 listed in dnsbl.sorbs.net] 2.8 RCVD_IN_DSBL RBL: Received via a relay in list.dsbl.org [] X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2005-11-03 at 09:51 -0800, Martin J. Bligh wrote: > For amusement, let me put in some tritely oversimplified math. For the > sake of arguement, assume the free watermarks are 8MB or so. Let's assume > a clean 64-bit system with no zone issues, etc (ie all one zone). 4K pages. > I'm going to assume random distribution of free pages, which is > oversimplified, but I'm trying to demonstrate a general premise, not get > accurate numbers. that is VERY over simplified though, given the anti-fragmentation property of buddy algorithm