From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: ide cdrom performance issue Date: Wed, 8 Oct 2003 17:32:02 +0200 Sender: linux-ide-owner@vger.kernel.org Message-ID: <20031008153202.GD1584@suse.de> References: <1065375332.1355.9.camel@server> <20031006073732.GV966@suse.de> <1065626920.1641.24.camel@server> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from ns.virtualhost.dk ([195.184.98.160]:47049 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S261670AbTJHPcI (ORCPT ); Wed, 8 Oct 2003 11:32:08 -0400 Content-Disposition: inline In-Reply-To: <1065626920.1641.24.camel@server> List-Id: linux-ide@vger.kernel.org To: Yossi Down-Under Cc: linux-ide@vger.kernel.org On Wed, Oct 08 2003, Yossi Down-Under wrote: > On Mon, 2003-10-06 at 09:37, Jens Axboe wrote: > > On Sun, Oct 05 2003, Yossi Down-Under wrote: > > > Running RH9 with xcdroast and three recorders each on its own ide > > > channel configured for ide-scsi. Having trouble with buffer underruns. > > > Am told by xcdroast author that it is a kernel ide driver issue, > > > specifically not using dma for transfers and recommended I try a newer > > > kernel. > > > > > > My question is whether the 2.5.75 kernel is going to improve this > > > situation before going to the trouble to install it? > > > > 2.5.75?! That kernel is ancient, you should download 2.6-test6 and give > > that a try. Note that you should not then use ide-scsi (don't config it > > in), and you need to give -dev=/dev/hdc as device argument to cdrecord. > > Replace hdc with whatever is your cd-r drive. > > OK, I did this. There must be some new package for module management > required that is not in RH9 as it failed to load the network module when > booted so I just compiled it into the kernel instead. > > The problem I have now is that without using ide-scsi, xcdroast > 0.98alpha14 doesn't see the drive. Will the ide-scsi driver also gain > the use of dma transfers or should I go back to the xcdroast author to > modify the program to use ide drives without scsi emulation? ide-scsi is deprecated for cd burning, so yes you should probably talk to him about updating xcdroast. -- Jens Axboe