How to mount usb2 devices

Bernd Walter ticso at cicely12.cicely.de
Sun Dec 26 05:17:16 PST 2004


On Sat, Dec 25, 2004 at 10:34:39PM -0800, Julian Elischer wrote:
> Bernd Walter wrote:
> >On Sat, Dec 25, 2004 at 11:46:58PM +0100, Darksidex wrote:
> >
> >>Bernd Walter wrote:
> >>
> >>
> >>>It is running high speed, because it is attached to your ehci
> >>>controller.
> >>>Having high throughput is another story - msdosfs is not very efficient
> >>>with some devices - you might want to check a dd with big block sizes
> >>>to verify if higher speed can be reached.
> >>>
> >>>
> >>
> >>How can I do it?
> >
> >
> >dd if=/dev/da-whatever-number-it-is of=/dev/null bs=64k
> >You may want to test higher values for bs= too.
> 
> I think that there is a lot of work that can be done to speed up
> USB2 devices..

Likely - there is still a lot that can be done even for full speed
devices.

> for example Ugen devices can be sped up by an order of magnitude
> with a simple set of changes. (that I will commit when I clean
> them up) I have to guess that the Umass driver may have similar
> performance problems.

So you can speed up ugen devices - sounds interesting.
What is the basic idea behind?

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



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