From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263574AbTKFNd1 (ORCPT ); Thu, 6 Nov 2003 08:33:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263575AbTKFNd1 (ORCPT ); Thu, 6 Nov 2003 08:33:27 -0500 Received: from ns.suse.de ([195.135.220.2]:48067 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S263574AbTKFNdZ (ORCPT ); Thu, 6 Nov 2003 08:33:25 -0500 Date: Thu, 6 Nov 2003 14:31:36 +0100 From: Jens Axboe To: "Prakash K. Cheemplavam" Cc: Nick Piggin , linux-kernel@vger.kernel.org Subject: Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt Message-ID: <20031106133136.GA477@suse.de> References: <3FA945DD.8030105@gmx.de> <20031106091746.GA1379@suse.de> <3FAA41C3.9060601@gmx.de> <3FAA45A9.20707@cyberone.com.au> <20031106130030.GC1145@suse.de> <3FAA4737.3060906@cyberone.com.au> <20031106130553.GD1145@suse.de> <3FAA4880.8090600@cyberone.com.au> <20031106131141.GE1145@suse.de> <3FAA4D48.6040709@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3FAA4D48.6040709@gmx.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 06 2003, Prakash K. Cheemplavam wrote: > Jens Axboe wrote: > >On Fri, Nov 07 2003, Nick Piggin wrote: > > > >> > >>Jens Axboe wrote: > >> > >> > >>>On Fri, Nov 07 2003, Nick Piggin wrote: > >>> > >>> > >>>>Jens Axboe wrote: > >>>> > >>>> > >>>> > >>>>>sys time is usually pretty high if that is the case, and it's hovering > >>>>>around 5% here... Prakash, are you sure that dma is enabled on the > >>>>>drive? When you see the problem, do a vmstat 1 for 10 seconds so you > >>>>>are > >>>>>absolutely sure you are sending the info from when the problem occurs. > >>>>> > >>>>> > >>>> > >>>>Although have a look at the interrupts field in vmstat 1255, 725, 736 > >>>>... > >>>> > >>> > >>>Yeah that is pretty high for just doing a burn, maybe something else is > >>> > >> > >>;) you are forgetting 2.6 should give 1000 timer interrupts per second! > > > > > >Heh indeed, maybe because the archs I use are still at 100. Looks > >suspiciously like it's loosing timer interrupts, which would indeed > >point to PIO. > > > bash-2.05b# hdparm -I /dev/hdc -i please > Is it normal that SCSI subsystem gets init'ed, even though nothing of it > is activated in the kernel? No, you still have it left in your kernel options. -- Jens Axboe