[mythtv-users] Video studder XvMC w/OSD

[W.Kenworthy]

On Wed, 2008-04-02 at 22:11 -0500, Roger Heflin wrote: 
> W.Kenworthy wrote:
> >> If it were, cpufreq would be speeding things up, and that is a fairly old cpu, 
> >> and it pre-dates Intel putting speedstep on their desktop cpus, they only did 

...

> Interesting.
> 
> Fedora 8 has that module, but does not automatically load it.
> 
> And interestingly setting the speed down to 400mhz on an Idle system does not 
> change the measured power consumption, doing the same thing on an AMD powernow 
> system (and I assume a actual Intel Speedstep) does lower the power used at 
> idle.   Setting it down to 400 on a non-idle system does lower the power 
> consumption as I would expect since it is now working slower.
> 
> And notice that using that module does not change the bogomips on the system, 
> were on an AMD powernow system it will change the bogomips.
> 
>                                                  Roger

This is running on gentoo and an ancient P4B-M 

How are you measuring power?

I also have the following turned on for idle savings:

CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y

Note that this is on a PXE system and all modules except nvidia are
compiled in.

Billk