how to do cpu voltage scaling
Hi,
I want to change voltage and frequency seperately.
With cpu-freq, i can change frequency, but cannot change voltage AFAIK.
Can I do this using cpu-freq?
If possible, how can I set voltage with the fixed value? If not, is there any way to do that?
FYI, i'm using intel i7-core(nehalem) and ubuntu 10.10. FYI2, i found out i can do using IA32_PERF_CTL register, but there's no detail from intel.
FYI3, can i change P-state table so that i can only change voltage in P states?
Thanks,
mihn
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Oh.. that would be great if i can.
can you tell me more detail?
2011/1/27 satish kumar <[email protected]>:
Quoted 30 lines
yes yo can do
Quoted 25 lines · mihn
Hi,
I want to change voltage and frequency seperately.
With cpu-freq, i can change frequency, but cannot change voltage AFAIK.Can I do this using cpu-freq?
If possible, how can I set voltage with the fixed value? If not, is there any way to do that?
FYI, i'm using intel i7-core(nehalem) and ubuntu 10.10. FYI2, i found out i can do using
IA32_PERF_CTLregister, but there's no detail from intel.
FYI3, can i change P-state table so that i can only change voltage in P states?Thanks,
mihn--
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