hiro writes:

> Huh? What exactly do you mean? Can you describe the scenario and the
> measurements you made?

The big one is USB.  disk/radio->kernel->user-space-usbd->kernel->application.
Four copies.

I would like to start playing with software defined radio on Plan
9, but that amount of data copying is going to put a lot of pressure
on the kernel to keep up.  UNIX/Linux suffers the same copy bloat,
and it's having trouble keeping up, too.


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