RE: Idle picture for those interested.

Woodruff, Richard
2008-04-04T21:56:47Z

> I've not calibrated to verify but that seems to be what the picture is
> showing so there is some chance the time base is off. All the
instruction
> trace is there to walk it if necessary. There have been some comments
> about NO_HZ adding some overhead from those who measure MHz around
here
> for things like MP3 load models. I hadn't looked very closely.

One question might be is if the timekeeping could be deferred until
after you have serviced the IRQ. Is there a reason to make the ISR wait
for housekeeping?

Regards,
Richard W.