interesting(?) data on network interrupt servicing

[Luigi Rizzo]

On Thu, Mar 23, 2006 at 07:42:16AM -0700, Scott Long wrote:
> Luigi Rizzo wrote:
> > On Thu, Mar 23, 2006 at 03:25:18PM +0100, Paolo Pisati wrote:
...
> >>ok, i updated my CURRENT and rerun the tests (and while here 
> >>i disabled SMP):
> >>
> >>phk's optimization to cpu ticks calculation shaved 4k ticks,
> > 
> > this makes it a very good candidate for MFC when 6.1 is out ?
...
> I haven't been paying close enough attention, have all of the calcru
> problems and other side effects been fixed from phk's work?

we should ask phk. As far as i remember the only "problem"
is/was that the sys/user times are computed as if the
cpu were running at its max speed. But this is in fact
a good thing because it is a more consistent measurement of
the cost of the CPU work, which decouples us from having
to take care of variable cpu speed.

luigi