From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263151AbTJ0Otp (ORCPT ); Mon, 27 Oct 2003 09:49:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263203AbTJ0Oto (ORCPT ); Mon, 27 Oct 2003 09:49:44 -0500 Received: from mail.broadpark.no ([217.13.4.2]:6393 "EHLO mail.broadpark.no") by vger.kernel.org with ESMTP id S263151AbTJ0Otn (ORCPT ); Mon, 27 Oct 2003 09:49:43 -0500 Cc: jgarzik@pobox.com To: linux-kernel@vger.kernel.org Subject: Re: kernel 2.6t9 SATA slower than 2.4.20 References: <3F9D196C.9080301@savages.net> <3F9D233D.6000409@pobox.com> Message-ID: From: Arve Knudsen Content-Type: text/plain; charset=US-ASCII; format=flowed MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Date: Mon, 27 Oct 2003 15:48:53 +0100 In-Reply-To: <3F9D233D.6000409@pobox.com> User-Agent: Opera7.21/Linux M2 build 480 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 27 Oct 2003 08:53:01 -0500, Jeff Garzik wrote: > 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? Should this make a difference speedwise with SiI 3112? I have one Maxtor 120GB, and one Seagate 120GB each attached to the SiI controller (Mobo: Asus A7N8X Deluxe). The Seagate (my main drive) is as slow as ever (since DMA was turned on by default, ~13MB/s), although hdparm reports better numbers for the Maxtor (~33MB/s). Regards Arve Knudsen