From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263069AbTJ0NxV (ORCPT ); Mon, 27 Oct 2003 08:53:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263085AbTJ0NxV (ORCPT ); Mon, 27 Oct 2003 08:53:21 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:17059 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S263069AbTJ0NxP (ORCPT ); Mon, 27 Oct 2003 08:53:15 -0500 Message-ID: <3F9D233D.6000409@pobox.com> Date: Mon, 27 Oct 2003 08:53:01 -0500 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Shaun Savage CC: linux-kernel@vger.kernel.org Subject: Re: kernel 2.6t9 SATA slower than 2.4.20 References: <3F9D196C.9080301@savages.net> In-Reply-To: <3F9D196C.9080301@savages.net> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Shaun Savage wrote: > I have just compiled and installed kernel 2.6t9 on my RH9 / Asus A7N8X > Deluxe. I find the disk access is slower using the 2.6 kernel than the > 2.4.20 kernel. > > To get it to work for 2.4.20 kernel I have to use > # hdparm -d1 -X88 /dev/hde > then the buffered disk read goes from 1.5M to 55M > > On the 2.6 kernel the buffered disk read is only 16M > > What do I have to do to increase the disk speed for kernel 2.6t9? Are you using CONFIG_SCSI_SATA in 2.6? Jeff