On 12 Apr 2014, at 0:08, Hans Petter Selasky <h...@selasky.org> wrote:
> Can you check using ldd, that it is using the libusb you installed?

> Also check using "usbdump" what size the kernel is submitting when you are 
> using libusb.

Oops, I just realised I didn't update my program to increase the request size!

I changed it to do 32k requests and now it 225MB/sec - very nice :)

Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
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