On Fri, 28 Jan 2000, Davide Libenzi wrote:
> > Yeah, I'm reading it (barely, I've been deleting most of my email
> > because I've been on holidays). The PMC (Performance Monitoring
> > Counter) patch I wrote is available at:
> > http://www.atnf.csiro.au/~rgooch/linux/
>
> What is Your impression of the patch ( if You've seen ) ? It has
> also the "side effect" of keeping RT task onto the higher cluster
> for a better RT latency.
While your patch might do some nice things to the schedule()
code path, we should all remember that the cost of scheduling
is NOT in the schedule() code path, but in repopulating the
cache (in userspace) after one process switches with another.
I'm writing a patch now to address that issue.
regards,
Rik
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