From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932396AbWAKOd4 (ORCPT ); Wed, 11 Jan 2006 09:33:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932397AbWAKOd4 (ORCPT ); Wed, 11 Jan 2006 09:33:56 -0500 Received: from nproxy.gmail.com ([64.233.182.207]:31831 "EHLO nproxy.gmail.com") by vger.kernel.org with ESMTP id S932396AbWAKOdz convert rfc822-to-8bit (ORCPT ); Wed, 11 Jan 2006 09:33:55 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Ieq0T/mimVw/E4vNyjgC99K/BspoejICcjJ+Zy/C2o/xYWoLpByLnGcQYnEORVhO2LK0uCDi5SloWv11tLrbzec42V8CIZP0acp9Omo/kfvkF3ow5YN9Ggp/GSXiqaR87PB6lSux7qx4vJeq8KbX4DSGwqjNtyvisD0VmTsunlg= Message-ID: <728201270601110633i2eb8c71dq8a0c23d9e7ad724f@mail.gmail.com> Date: Wed, 11 Jan 2006 08:33:20 -0600 From: Ram Gupta To: jeff shia Subject: Re: something about disk fragmentation Cc: linux-kernel@vger.kernel.org In-Reply-To: <7cd5d4b40601110501w40bc28f0peb13cdbb082e2b4a@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <7cd5d4b40601110501w40bc28f0peb13cdbb082e2b4a@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 2.6 kernel has 3 differen kind of io schedulers. Anticipatory io scheduler is the default one. You may try to select CFQ or deadline scheduler & see if that improves your performance. These schedulers have parameters which can be tuned also. Regards Ram Gupta On 1/11/06, jeff shia wrote: > Hello,everyone > > In a file system ,the disk fragmentation can slow down the data accessing > speed.How can I solve this kind of problem in a file system?I know that > preallocation tech can do this.Is there any other solutions? > Thank you! > > Yours > Jeff > - > 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/ >