From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261522AbTLSHSF (ORCPT ); Fri, 19 Dec 2003 02:18:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261569AbTLSHSF (ORCPT ); Fri, 19 Dec 2003 02:18:05 -0500 Received: from outpost.ds9a.nl ([213.244.168.210]:39631 "EHLO outpost.ds9a.nl") by vger.kernel.org with ESMTP id S261522AbTLSHSC (ORCPT ); Fri, 19 Dec 2003 02:18:02 -0500 Date: Fri, 19 Dec 2003 08:18:00 +0100 From: bert hubert To: Yun Zhou Cc: linux-kernel@vger.kernel.org Subject: Re: HD access sluggish in 2.6.0 Message-ID: <20031219071800.GA8087@outpost.ds9a.nl> Mail-Followup-To: bert hubert , Yun Zhou , linux-kernel@vger.kernel.org References: <200312181957.05917.sraphim@mofd.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200312181957.05917.sraphim@mofd.net> User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 18, 2003 at 07:57:05PM -0600, Yun Zhou wrote: > I'm using a system with 1HD (DC WD600BB-00CAA1 60 GB) using kernel 2.6.0. > Whenever the system uses the disk extensively (copying a file, untarring, > etc.), it grinds to a near halt, with the CPU usage at about 100%, even for a > simple copying operation. Please show the output of hdparm /dev/hda: /dev/hda: multcount = 16 (on) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 65535/16/63, sectors = 117210240, start = 0 You will probably see using_dma = 0 there. This in turn probably means you did not compile in the right IDE driver. Try hdparm -d1 /dev/hda, and/or recompile your kernel. > This problem is not present when using 2.4.22, nor any of the 2.4 series > kernels that I've tried. Does anyone know what is causing this? You did not specify any details of your kernel compile so it is hard to tell. -- http://www.PowerDNS.com Open source, database driven DNS Software http://lartc.org Linux Advanced Routing & Traffic Control HOWTO