On Sun, 23 May 2010, Grant wrote:

quoted text
> >> What function does the USB Interrupt Threshold Control
> >> value have?
> >
> > See the EHCI spec.  Basically, it affects how long the
> > hardware waits before reporting interrupts.  Longer waits
> > mean slower response times and worse throughput. Leave it
> > alone.
> 
> Can the value be read?

Yes.

Alan Stern

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