Ok, well is there a way to measure total CPU power consumption? Maybe by reading sysfs? On Nov 20, 2011 2:34 PM, "Arjan van de Ven" <[email protected]> wrote:
> On 11/19/2011 6:57 PM, Ken O'Brien wrote: > > Hi, > > > > I'm trying to find out how much power is consumed for each cpu state. > > I'm getting the following output for cpuidle's "power" attribute. I > > thought this was supposed to list how much power in milliwatts is > > consumed in each state. > > > > ===== > > ken@mjolnir:/sys/devices/system/cpu/cpu0/cpuidle$ cat state*/power > > 4294967295 > > 4294967294 > > 4294967293 > > 4294967292 > > ===== > > > > My guess is that these are mock values until proper values are > > implemented. Can anyone shed some light on this? i.e., the current > > status of this implementation or perhaps improper configuration on my > part? > > > > frankly, I don't think this really make sense... > I wouldn't know what it means if a logical cpu core (half of a > hyperthreading pair or half of an AMD pair) is in a state and the other > half is not. The core is also a very small %age of power of the whole > CPU chip (never mind SOCs) > >
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