Genesys USB hard disk, 1 MB/s on USB 2.0?

Bernd Walter ticso at cicely12.cicely.de
Tue Dec 25 04:57:07 PST 2007


On Tue, Dec 11, 2007 at 02:51:07PM +0100, Palle Girgensohn wrote:
> Hi!
> 
> Fresh install of FreeBSD-6.3RC1 on a reasonalby fresh Dell machine.
> 
> Hooked up a USB 2.0 hard disk, and I get terrible performance:
> 
> umass0: Genesyslogic USB Mass Storage Device, rev 2.00/0.33, addr 2
> da0 at umass-sim0 bus 0 target 0 lun 0
> da0: <WDC WD25 00JB-55GVC0 0811> Fixed Direct Access SCSI-0 device
> da0: 1.000MB/s transfers
> da0: 238475MB (488397168 512 byte sectors: 255H 63S/T 30401C)
> 
> --
> 
> # dd if=/dev/da0 of=/dev/null
> ^C536821+0 records in
> 536821+0 records out
> 274852352 bytes transferred in 3249.941272 secs (84571 bytes/sec)
> 
> --
> 
> # usbdevs -v
> Controller /dev/usb0:
> addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), 
> Intel(0x0000), rev 1.00
> port 1 addr 2: full speed, self powered, config 1, product 0x0702(0x0702), 
> vendor 0x05e3(0x05e3), rev 0.33
> port 2 powered
> Controller /dev/usb1:
> addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), 
> Intel(0x0000), rev 1.00
> port 1 powered
> port 2 powered

There is no high-speed USB controller, just full/low-speed capable.
Since you claimed your board is reasonable new you likely missed
compiling ehci controller support into your kernel.

-- 
B.Walter                http://www.bwct.de      http://www.fizon.de
bernd at bwct.de           info at bwct.de            support at fizon.de


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