[linux-pm] [Question] AMD opteron can support CPUfreq by per core ?

Peter Teoh htmldeveloper at gmail.com
Thu Oct 30 21:10:30 PDT 2008


and check this out:

http://ubuntuforums.org/archive/index.php/t-80494.html

in-depth steps for setting up cpufreq for one processor, which i
supposed can be extended for multicore?

On Fri, Oct 31, 2008 at 11:06 AM, Peter Teoh <htmldeveloper at gmail.com> wrote:
> check this out:
>
> http://osdir.com/ml/kernel.cpufreq/2004-07/msg00012.html
>
> from the reply, since the power management flag is at the per-core
> level (check /proc/cpuinfo), all control can be done at the per-core
> level, hard-ware wise.   (not sure of Linux Kernel itself)
>
> But at least 4 flags must be present (read above email):   ts, ttp, fid, vid.
>
> I must also say this is the first time I am aware of these flags too :-).
>
> On Thu, Oct 30, 2008 at 2:06 PM, MinChan Kim <minchan.kim at gmail.com> wrote:
>> Hi,  all,
>>
>> I want to test CPUfreq function in  AMD opteron quad-core series.
>> But I am not sure linux in now can support CPUfreq for ADM opteron by per core ?
>> What I mean is not controling to put together 2 core by one package
>> but control by per core.
>> After all, I want to control all 4 cpu separetely.
>>
>> Is is possible? If it is possible, What kinds of model can support ?
>>
>>  --
>> Kinds regards,
>> MinChan Kim
>>
>> --
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>>
>
>
>
> --
> Regards,
> Peter Teoh
>



-- 
Regards,
Peter Teoh


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