Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 30 Oct 2001 20:34:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 30 Oct 2001 20:34:31 -0500 Received: from smtpsrv1.isis.unc.edu ([152.2.1.138]:8928 "EHLO smtpsrv1.isis.unc.edu") by vger.kernel.org with ESMTP id ; Tue, 30 Oct 2001 20:34:20 -0500 Date: Tue, 30 Oct 2001 20:34:55 -0500 (EST) From: "Daniel T. Chen" To: "J . A . Magallon" cc: Lista Linux-Kernel Subject: Re: cdrecord from ext3 In-Reply-To: <20011031001846.A1840@werewolf.able.es> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Interesting. I've burnt just fine with `cdrecord -v speed=20 dev=0,0,0 foo.iso` to an ATAPI Yamaha CRW2200 (2.4.13-ac1+freeswap). Lowest FIFO reports are ~78%. I gave up my Plexwriter 8/20 a while back, so I'd look at the aic7xxx driver. --- Dan Chen crimsun@email.unc.edu GPG key: www.cs.unc.edu/~chenda/pubkey.gpg.asc On Wed, 31 Oct 2001, J . A . Magallon wrote: > Hi all, > > I have found a strange problem using cdrecord from an ext3 partition. > When burning a cd image (about 500Mb), with cdrecord -v to see some info, > after about 150Mb the percentage of fifo filled begins to drop, until the > burning fails. I though it was related to some buffer/cache issue, but > then I just copied the image to an ext2 partition (so the cache still > filled more, just reaching my ram size), and burnt perfect from the > ext2 partition. > > So it looks like ext3 can not give a sustained read rate (not so much, > burning was at 8x). Fifo from ext2 never dropped below 99%. > > Is this a bug or the answer is just 'never toast from a journaled fs' ? > > Kernel: 2.4.13-ac5+bproc, controller is an Adaptec > > Controller: > Adaptec AIC7xxx driver version: 6.2.4 > aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs > > Drives: > Host: scsi0 Channel: 00 Id: 00 Lun: 00 > Vendor: IBM Model: DDYS-T09170N Rev: S96H > Type: Direct-Access ANSI SCSI revision: 03 > Host: scsi0 Channel: 00 Id: 01 Lun: 00 > Vendor: IBM Model: DCAS-34330W Rev: S65A > Type: Direct-Access ANSI SCSI revision: 02 > Host: scsi1 Channel: 00 Id: 00 Lun: 00 > Vendor: CREATIVE Model: CD5230E Rev: 1.01 > Type: CD-ROM ANSI SCSI revision: 02 > Host: scsi1 Channel: 00 Id: 01 Lun: 00 > Vendor: YAMAHA Model: CRW8424E Rev: 1.0j > Type: CD-ROM ANSI SCSI revision: 02 > > Settings: > Channel A Target 0 Negotiation Settings > User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit) > Goal: 80.000MB/s transfers (40.000MHz, offset 63, 16bit) > Curr: 80.000MB/s transfers (40.000MHz, offset 63, 16bit) > (ext2) > Channel A Target 1 Negotiation Settings > User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit) > Goal: 40.000MB/s transfers (20.000MHz, offset 15, 16bit) > Curr: 40.000MB/s transfers (20.000MHz, offset 15, 16bit) > (ext3) > > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/