CPUFreq HAL [PSARC/2007/679 FastTrack timeout 12/12/2007]

[Bart Smaalders]

Casper.Dik at sun.com wrote:
> 
>> It seems to me that multi-socket machines need to support
>> different speeds on different sockets.
> 
> 
> And even in some cases different speeds on different cores.
> 
> (Barcelona in AM3 sockets)
> 
> Casper
> 

Indeed.  It would appear that one answer is CPU power management groups.
These groups would consist of one or more virtual CPUs depending on
the hardware capabilities; a single group would be all the virtual CPUs
that run at the same power level. Setting the power level on one of the
virtual CPUs would affect all the rest in that group.

- Bart




-- 
Bart Smaalders			Solaris Kernel Performance
barts at cyber.eng.sun.com		http://blogs.sun.com/barts