Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S270439AbTGXCp5 (ORCPT ); Wed, 23 Jul 2003 22:45:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S271055AbTGXCp4 (ORCPT ); Wed, 23 Jul 2003 22:45:56 -0400 Received: from ziggy.one-eyed-alien.net ([64.169.228.100]:42254 "EHLO ziggy.one-eyed-alien.net") by vger.kernel.org with ESMTP id S270439AbTGXCpz (ORCPT ); Wed, 23 Jul 2003 22:45:55 -0400 Date: Wed, 23 Jul 2003 20:00:51 -0700 From: Matthew Dharm To: USB Developers , Kernel Developer List Subject: System stalls using usb-storage Message-ID: <20030723200051.C18354@one-eyed-alien.net> Mail-Followup-To: USB Developers , Kernel Developer List Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="uXxzq0nDebZQVNAZ" Content-Disposition: inline User-Agent: Mutt/1.2.5i Organization: One Eyed Alien Networks X-Copyright: (C) 2003 Matthew Dharm, all rights reserved. X-Message-Flag: Get a real e-mail client. http://www.mutt.org/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1602 Lines: 51 --uXxzq0nDebZQVNAZ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Many people, including myself, have observed system stalls when using usb-storage. It happens when copying large amounts of data to a USB device -- everything (except the USB access) just stops for a little while. My best guess is that the block cache is filling up (easy since USB is so slow). The question is, what is the best way to handle this. I'm guessing that increasing the priority of the usb-storage control thread will help, but that's just a guess. I'm not even sure how to go about doing that, tho... This is seen on 2.4 and 2.5/6 kernels. Anyone have any ideas? Matt --=20 Matthew Dharm Home: mdharm-usb@one-eyed-alien.= net=20 Maintainer, Linux USB Mass Storage Driver M: No, Windows doesn't have any nag screens. C: Then what are those blue and white screens I get every day? -- Mike and Cobb User Friendly, 1/4/1999 --uXxzq0nDebZQVNAZ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE/H0vjIjReC7bSPZARAjvgAJ4gL6yLJbHIufPrhFW3t+DXhzaG4ACfT9RA n1O25A8kUfQMuQ7xPJM+ta8= =WXW8 -----END PGP SIGNATURE----- --uXxzq0nDebZQVNAZ-- - 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/