> of course the 64bit question is, which queue is dropping packets.
> there are so many to choose from.
Looks my initial guess was wrong. I added some readahead to the kernel
usb driver and that didn't help at all. Then I reduced the device's
buffering ("burst factor"), and increased the intermediate buffering
between input and output processes in the generic part of the usb/ether
driver. That seems to have done the trick: no more dropped packets.
That's with the raspberry pi built-in usb ether. My asix-based ethernet
dongle doesn't work any better on an x86 host; but at least it doesn't
work any worse. Geoff has pushed the new usb/ether code onto sources.
Anybody who is actually using usb/ether - could you try the new version
and let us know if we've broken yours?
