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, =20 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. =20 Cheers. =20 -Chris =20 -------------------------- 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, >=20 > Here is the output with the different block size. >=20 > root@spunky2:~$ dd if=3D/dev/da0 of=3D/dev/null bs=3D64000 > ^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.de
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