From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264304AbUEDKQh (ORCPT ); Tue, 4 May 2004 06:16:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264302AbUEDKQg (ORCPT ); Tue, 4 May 2004 06:16:36 -0400 Received: from madrid10.amenworld.com ([62.193.203.32]:37132 "EHLO madrid10.amenworld.com") by vger.kernel.org with ESMTP id S264304AbUEDKQ2 (ORCPT ); Tue, 4 May 2004 06:16:28 -0400 Date: Tue, 4 May 2004 12:16:53 +0200 From: DervishD To: Alexander ZVYAGIN Cc: linux-kernel@vger.kernel.org Subject: Re: freezes with cdrecord Message-ID: <20040504101652.GB105@DervishD> Mail-Followup-To: Alexander ZVYAGIN , linux-kernel@vger.kernel.org References: <200405041145.05894.Alexander.Zviagine@cern.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <200405041145.05894.Alexander.Zviagine@cern.ch> User-Agent: Mutt/1.4.2.1i Organization: Pleyades Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Alexander :) * Alexander ZVYAGIN dixit: > During the burning process everything is fine and > smooth. But very close to the end, the computer freezes > again for ~10-20 seconds. It happens in 'fixating' stage > of the writing process. [...] > Any explanations why those freezes happen? It maybe has to do with the lack of zerocopy support (no DMA transfer) in certain parts of the process. For example, under 2.4.x you don't have zerocopy when writing audio, and maybe during fixation DMA is not used, neither. I'm not an expert in this issue, but I think that it may be the cause. Which kernel are you using? Which kind of recorder? Raúl Núñez de Arenas Coronado -- Linux Registered User 88736 http://www.pleyades.net & http://raul.pleyades.net/