From: "Joseph" <jospehchan@yahoo.com.tw>
To: <linux-usb-users@lists.sourceforge.net>, <linux-kernel@vger.kernel.org>
Subject: USB 2.0 is too slow?
Date: Thu, 19 Dec 2002 15:57:39 +0800 [thread overview]
Message-ID: <009e01c2a734$4e045540$3716a8c0@taipei.via.com.tw> (raw)
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
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next reply other threads:[~2002-12-19 7:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-19 7:57 Joseph [this message]
2002-12-20 16:42 David Brownell
2002-12-23 6:24 ` Joseph
2002-12-23 18:15 ` David Brownell
2002-12-24 7:29 ` Joseph
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