cpuspeed

Satish Balay balay at fastmail.fm
Sun Oct 3 18:26:20 UTC 2004



On Sun, 3 Oct 2004, Thomas E. Dukes wrote:

> Hello,
> 
> I noticed I have this utility set to run on startup.  Only thing it won't
> start.  If I try to run it from the command line, I get an error that it
> could not open file for writing:
> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
> 
> I guess this was installed by FC 2 as I did not notice it in RH 9.
> 
> I tried to create the file as root, but it would not let me.
> 
> What exactly does cpuspeed do?  Is it a good utility to use, etc?

Do you have a laptop with a mobile cpu that supports
intel-speedstep/amd-pownernow?

If so, you'll notice cpuspeed will control the frequency scaling as
supported by the above in hardware. (primarily for ehancing battery
life)

Satish




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