> On 18-Jul-2000 Ulf Carlsson wrote:
> > I tried to do profiling on a 32 CPU machine as well, but the machine
> > wouldn't let me finish the compiles before it crashed. Anyway, the
> > graphs generated are rather interesting. Almost 50% of the CPU time
> > is in cpu_idle from the compiles on a Origin 2000. This looks like a
> > bug caused that may be caused by the recent generic changes in the
> > priority handling.
>
> This is in line with the 421% CPU utilization reported by time. Are you sure
> that kernel builds are parallel enough to keep all 8 CPUs busy? Otherwise
> you'll have idle CPUs giving you a lot of idle time.
No, I would see better results if I did make -j8 MAKE="make -j8", but
unfortanately that didn't work. I'll try it again later today. We
don't have enough top-level directories in the kernel tree.
Ulf
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