From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 19 Dec 2002 02:49:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 19 Dec 2002 02:49:49 -0500 Received: from smtp002.mail.tpe.yahoo.com ([202.1.238.49]:51469 "HELO smtp002.mail.tpe.yahoo.com") by vger.kernel.org with SMTP id ; Thu, 19 Dec 2002 02:49:48 -0500 Message-ID: <009e01c2a734$4e045540$3716a8c0@taipei.via.com.tw> From: "Joseph" To: , Subject: USB 2.0 is too slow? Date: Thu, 19 Dec 2002 15:57:39 +0800 MIME-Version: 1.0 Content-Type: text/plain; charset="big5" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, I've rebuilt the latest kernel 2.5.52 and test the USB 2.0 funciton with my LaCie USB2.0/1394-Disk Drive 10GB and a Plextor PX-W2410TU USB2.0 CD-RW. It spneds about 8 minutes to copying a 300MB file. (10 times test) Do I miss some modules? Some problems I met as follows. (1)Sometimes it can copy completely in 30 seconds. Is the echi-hcd module instable or immature now? Or the VIA USB 2.0 host controller is bad support? (2) If two USB2.0 devices (HDD and CD-RW) are pluged into the same usb hub, Two situations I met as follow. ( check /proc/scsi/scsi ) A. 2 devices are found and can be attached. B. 2 devices are found but only one device can be attached. (3) What is this file, /proc/scsi/device_info, for? My configuration, KT333+VT8235+ IBM ATA66 10GB HDD. Thanks in advance. Best Regards. Joseph ----------------------------------------------------------------- < ¨C¤Ñ³£ Yahoo!©_¼¯ > www.yahoo.com.tw