[Haifux] reading electric current registers on CPU

Mark Silberstein marks at cs.technion.ac.il
Mon Dec 28 14:56:31 MSK 2009


Friends, thanks for all the ideas - none have worked in the meantime.

+mA query is nice, but still not  too helpful
+powertop doesn't have any output that shows CPU power other than for
laptops battery
+/proc/acpi does not expose the current /power registers..

Any other ideas?

On Mon, Dec 28, 2009 at 12:47 PM, Maxim Kovgan <kovganm at gmail.com> wrote:

> is analyzing:
> /proc/acpi/CPU0/power
> /proc/acpi/CPU1/power
> ...
> /proc/acpi/CPU${N}/power
>
> good for you ?
>
>
> On Mon, Dec 28, 2009 at 9:15 AM, Mark Silberstein <marks at cs.technion.ac.il
> > wrote:
>
>> Friends,
>>
>> I'm trying to find the way for the user-level program to read the electric
>> current sensor of a CPU to compute its  power consumption (given vCore it
>> should be easy). I'm trying to use lm_sensors, which actually mention the
>> support of  this kind of info, but I can't seem to have the kernel module
>> which exposes it to lm_sensors and does the trick.
>>
>> Googling is not that useful for the query "reading CPU current  register
>> "  brings up tons of info with "current" in the sense of momentarily, rather
>> than electric current. ...
>>
>> Any idea ?
>>
>> Mark
>>
>>
>> _______________________________________________
>> Haifux mailing list
>> Haifux at haifux.org
>> http://hamakor.org.il/cgi-bin/mailman/listinfo/haifux
>>
>>
>
>
> --
> Maxim Kovgan
>
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