Re: RPi performance issue, pmap to blame?

[Nick Hudson <skrll%netbsd.org@localhost>]

On 11/22/13 12:19, Masanobu SAITOH wrote:
> > bcm2835 pic usb                          1331781849     8084 intr
>
> Accessing USB storage heavily?

start-of-frame (SOF) interrupt is used to schedule transfers. HS SOF is 
8000 times/second.

Nick