[Haifux] reading electric current registers on CPU

Sorana Fraier sf10095 at gmail.com
Mon Dec 28 15:29:20 MSK 2009


there is a kernel parameter that sets lm_sensors. Is it enabled?

check

grep -i sensors /usr/src/linux/.config

On Mon, Dec 28, 2009 at 1:56 PM, Mark Silberstein
<marks at cs.technion.ac.il>wrote:

> 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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