USB 2.0 external hard drive only 1.000MB/s transfers
Hans Petter Selasky
hselasky at c2i.net
Sun Sep 18 04:04:14 PDT 2005
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
> > issues.
> > Can someone point me in the right direction or see an issue with my
> > config? I have included a "dmesg" and "kernel config" below.
> > Thank you in advance for your help.
> > Cheers.
> > -Chris
> The umass driver does not display the right number. What does
> "dd if=/dev/daXXX of=/dev/null" show ?
The speed depends very much on the block size used:
Also try this:
dd if=/dev/da0 of=/dev/null bs=64000
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