Frequency scaling not working
Aaron Konstam
akonstam at sbcglobal.net
Thu Nov 22 14:38:08 UTC 2007
On Wed, 2007-11-21 at 16:20 -0700, Ryan Campbell wrote:
> I still have not been able to get my frequency scaling working, but
> after some looking around I noticed that
> /proc/acpi/processor/CPU0/throttling says:
>
> # cat /proc/acpi/processor/CPU0/throttling
> <not supported>
>
> Is this normal? It seems odd because I also get this:
>
> # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
> 2001000 2000000 1600000 1200000 800000
>
> Which makes me think that throttling should be working. I am running out
> of ideas though.
> hen I issue the cat commands
> Ryan
>
When I issue the commands above I get:
[akonstam at cyrus ~]$ cat /proc/acpi/processor/CPU0/throttling
state count: 8
active state: T0
state available: T0 to T7
states:
*T0: 00%
T1: 12%
T2: 25%
T3: 37%
T4: 50%
T5: 62%
T6: 75%
T7: 87%
[akonstam at cyrus ~]$
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
1867000 1600000 1333000 1067000 800000
Now the second set of numbers are the ones I actually see as cpu
frequencies. The first makes no sense at all. Can any one explain the
output?
--
=======================================================================
He is truly wise who gains wisdom from another's mishap.
=======================================================================
Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam at sbcglobal.net
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