From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 30 Aug 2002 17:25:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 30 Aug 2002 17:25:39 -0400 Received: from garrincha.netbank.com.br ([200.203.199.88]:24078 "HELO garrincha.netbank.com.br") by vger.kernel.org with SMTP id ; Fri, 30 Aug 2002 17:25:38 -0400 Date: Fri, 30 Aug 2002 18:22:08 -0300 From: Sergio Bruder To: Markus Plail Cc: Anssi Saari , Andre Hedrick , vojtech@ucw.cz, linux-kernel@vger.kernel.org Subject: Re: PROBLEM: CD burning at 12x uses excessive CPU, although DMA is enabled Message-ID: <20020830212208.GA6065@bruder.net> Reply-To: sergio@bruder.net Mail-Followup-To: Sergio Bruder , Markus Plail , Anssi Saari , Andre Hedrick , vojtech@ucw.cz, linux-kernel@vger.kernel.org References: <200204092206.02376.roger.larsson@norran.net> <20020414123935.GA6441@sci.fi> <20020830043346.GA5793@bruder.net> <87d6s0g9eq.fsf@plailis.homelinux.net> <20020830065142.GA10582@sci.fi> <874rdcg62f.fsf@plailis.homelinux.net> <20020830154225.GA6114@sci.fi> <873cswuvvi.fsf@plailis.homelinux.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <873cswuvvi.fsf@plailis.homelinux.net> User-Agent: Mutt/1.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 30, 2002 at 06:58:09PM +0200, Markus Plail wrote: > Hi Anssi! > > * Anssi Saari writes: > >On Fri, Aug 30, 2002 at 09:27:04AM +0200, Markus Plail wrote: > >>* Anssi Saari writes: > >>>I also don't have your DAO vs. TAO problem. > >> > >>Hmm.. you wrote that cdrdao gives the problem, but cdrecord doesn't. > > > >I doubt that. Even if I did, it's wrong. > > Yes, sorry, it was Sergio. > > (...) > > If you write CDs in RAW modes, then there's the problem with the high > loads. Examples: > - cdrecord -raw96r/p (2448 bytes/sector) > - cdrecord -raw16 (2368 bytes/sector) > - cdrdao --driver generic-mmc-raw (2368 bytes/sector) > > So for Sergio: Try using the generic-mmc without raw driver in cdrdao. > I was using exactly generic-mmc, never tried the raw version. I only said that with ISO images the problem dont show up, as Anssi. > > And audio CDs or (S)VCDs are written in mode2 (2352 bytes/sector) and > also cause the high loads, this time independent from the writing mode. > AFAIK this behaviour should be the same on any Linux system. Sergio Bruder -- http://pontobr.org pub 1024D/0C7D9F49 2000-05-26 Sergio Devojno Bruder Key fingerprint = 983F DBDF FB53 FE55 87DF 71CA 6B01 5E44 0C7D 9F49 sub 1024g/138DF93D 2000-05-26