Date: Tue, 20 Sep 2005 08:02:04 +1000 From: "Chris Richards" <chrisric@routemaster.net> To: <ticso@cicely.de> Cc: freebsd-usb@freebsd.org Subject: RE: USB 2.0 external hard drive only 1.000MB/s transfers Message-ID: <0C9AA1AB019C4A44AE29659CF2BB203202F19C@gir.routemaster.net>
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Hi, The requested output is below and I understand what you are saying about the speed of a drive vs USB 2.0. I have plugged the drive into Windows XP and transferred a file to it from another computer over my 100Mb LAN and it sits at around 9,000KB's so it is definitely capable of going faster than it currently is on FreeBSD. Cheers. -Chris -------------------------- root@spunky2 <mailto:root@spunky2> :~# usbdevs -v Controller /dev/usb0: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), VIA(0x0000), rev 1.00 port 1 powered port 2 powered Controller /dev/usb1: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), VIA(0x0000), rev 1.00 port 1 powered port 2 addr 2: full speed, self powered, config 1, USB TO IDE(0x0702), vendor 0x05e3(0x05e3), rev 0.33 Controller /dev/usb2: addr 1: high speed, self powered, config 1, EHCI root hub(0x0000), VIA(0x0000), rev 1.00 port 1 powered port 2 powered port 3 powered port 4 powered Controller /dev/usb3: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x0000), rev 1.00 port 1 powered port 2 addr 2: full speed, power 160 mA, config 1, EZ USB/Ethernet Converter(0x0200), SMC, Inc(0x0707), rev 1.01 ________________________________ From: Bernd Walter [mailto:ticso@cicely12.cicely.de] Sent: Tue 20/09/2005 12:48 AM To: Chris Richards Cc: hselasky@c2i.net; freebsd-usb@freebsd.org Subject: Re: USB 2.0 external hard drive only 1.000MB/s transfers On Mon, Sep 19, 2005 at 08:17:36AM +1000, Chris Richards wrote: > Hi, > > Here is the output with the different block size. > > root@spunky2:~$ dd if=/dev/da0 of=/dev/null bs=64000 > ^C4262+0 records in > 4262+0 records out > 272768000 bytes transferred in 269.048179 secs (1013826 bytes/sec) What does usbdevs -v say? > From: owner-freebsd-usb@freebsd.org on behalf of Hans Petter Selasky > Sent: Sun 18/09/2005 9:05 PM > To: freebsd-usb@freebsd.org > Subject: Re: USB 2.0 external hard drive only 1.000MB/s transfers > > On Friday 16 September 2005 08:45, Hans Petter Selasky wrote: > > On Thursday 15 September 2005 14:01, Chris Richards wrote: > > > Hi, > > > > > > I bought a USB 2.0 external hard drive and USB 2.0 PCI card to use for > > > backups on my FreeBSD box but the drive is recognised as only being able > > > to do 1.000MB/s transfers. Obviously a USB 2.0 drive should be able to > > > transfer data a lot faster... I have checked my config and can't see any No - A high-speed drive should be able to transfer faster, but USB2.0 just means compliance with USB2.0 specs and not that it is high-speed. It is completely OK for a USB2.0 drive to be just full-speed. That said, even with a high-speed drive it finally can still be a slow one. -- B.Walter BWCT http://www.bwct.de bernd@bwct.de info@bwct.dehome | help
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