From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261950AbVAYO2c (ORCPT ); Tue, 25 Jan 2005 09:28:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261951AbVAYO2c (ORCPT ); Tue, 25 Jan 2005 09:28:32 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:26012 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S261950AbVAYO2a (ORCPT ); Tue, 25 Jan 2005 09:28:30 -0500 Date: Tue, 25 Jan 2005 14:27:57 +0000 From: Christoph Hellwig To: Steve Lord Cc: "Mukker, Atul" , "'Andi Kleen'" , "'Marcelo Tosatti'" , "'Mel Gorman'" , "'William Lee Irwin III'" , "'Linux Memory Management List'" , "'Linux Kernel'" , "'Grant Grundler'" Subject: Re: [PATCH] Avoiding fragmentation through different allocator Message-ID: <20050125142757.GA20442@infradead.org> Mail-Followup-To: Christoph Hellwig , Steve Lord , "Mukker, Atul" , 'Andi Kleen' , 'Marcelo Tosatti' , 'Mel Gorman' , 'William Lee Irwin III' , 'Linux Memory Management List' , 'Linux Kernel' , 'Grant Grundler' References: <0E3FA95632D6D047BA649F95DAB60E5705A70E61@exa-atlanta> <41F65514.3040707@xfs.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <41F65514.3040707@xfs.org> User-Agent: Mutt/1.4.1i 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 > It is not the driver per se, but the way the memory which is the I/O > source/target is presented to the driver. In linux there is a good > chance it will have to use more scatter gather elements to represent > the same amount of data. Note that a change made a few month ago after seeing issues with aacraid means it's much more likely to see contingous memory, there were some numbers on linux-scsi and/or linux-kernel. From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 25 Jan 2005 14:27:57 +0000 From: Christoph Hellwig Subject: Re: [PATCH] Avoiding fragmentation through different allocator Message-ID: <20050125142757.GA20442@infradead.org> References: <0E3FA95632D6D047BA649F95DAB60E5705A70E61@exa-atlanta> <41F65514.3040707@xfs.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <41F65514.3040707@xfs.org> Sender: owner-linux-mm@kvack.org Return-Path: To: Steve Lord Cc: "Mukker, Atul" , 'Andi Kleen' , 'Marcelo Tosatti' , 'Mel Gorman' , 'William Lee Irwin III' , 'Linux Memory Management List' , 'Linux Kernel' , 'Grant Grundler' List-ID: > It is not the driver per se, but the way the memory which is the I/O > source/target is presented to the driver. In linux there is a good > chance it will have to use more scatter gather elements to represent > the same amount of data. Note that a change made a few month ago after seeing issues with aacraid means it's much more likely to see contingous memory, there were some numbers on linux-scsi and/or linux-kernel. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org