From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261505AbVAGQeF (ORCPT ); Fri, 7 Jan 2005 11:34:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261506AbVAGQeF (ORCPT ); Fri, 7 Jan 2005 11:34:05 -0500 Received: from imap.gmx.net ([213.165.64.20]:65187 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S261505AbVAGQdy (ORCPT ); Fri, 7 Jan 2005 11:33:54 -0500 X-Authenticated: #4512188 Message-ID: <41DEB9E3.8060206@gmx.de> Date: Fri, 07 Jan 2005 17:33:39 +0100 From: "Prakash K. Cheemplavam" User-Agent: Mozilla Thunderbird 1.0 (X11/20050103) X-Accept-Language: de-DE, de, en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: 2.6.10 and high cpu usage on reading out CDs with cdrtools and -clone X-Enigmail-Version: 0.89.6.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig4A3821A2FCC71F4DB1DB7190" X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig4A3821A2FCC71F4DB1DB7190 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit I am not sure whether it is a cdrtools or kernel problem. I just noticed using this command: /usr/bin/readcd -v dev=/dev/hdc f=image.img -clone retries=128 leads to 100% CPU usage (depending on read speed). Writing this image is no problem though (in high-speed). DMA is activated and using cdrdao CPU usage stays low on reading the image. Leaving out the option -clone option CPU usage stays low, as well. So is reading subchannels a problem? But AFAIk cdrdao is configured to read subchannels, as well, but doesn't show this problem (but I don't know whether it only reads audio subchannels, though). Anybody else making this observation? bye, Prakash --------------enig4A3821A2FCC71F4DB1DB7190 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFB3rnmxU2n/+9+t5gRAhItAKCdBiLP/2H7TzEpoKlkA4k7rDs2AwCgm31P TGzIcSSAFc1SUrCArIQwpnw= =KE6Y -----END PGP SIGNATURE----- --------------enig4A3821A2FCC71F4DB1DB7190--