CPU utilization

Thu Apr 12 10:42:18 UTC 2007

Randall Stewart <rrs at cisco.com> writes:
> I have three machines.
>
> 1) stewart - running 7.0 (2.8gig p4 dual core)
> 2) bsd1    - running 7.0 (2.8gig Xeon Hyperthreaded)
> 3) bsd2    - running 6.2 (2.4gig Xeon Hyperthreaded)
>
> Now if I run tests that max out cpu (at least I think
> they do).. I see <1> or <2> drag down to 1% idle/ even
> 0 %idle.
>
> However <3> never drops below 50% idle.. it preforms
> a lot slower too.. which I expect since it is somewhat
> of an older processor.. but in running say
> top -S I see CPU 1 always running the idle process...

By default, 6.2 doesn't schedule processes on the virtual core on a
hyperthreading CPU.

DES
-- 
Dag-Erling Smørgrav - des at des.no