Power consumption measurements for ARM

[taeung <treeze.taeung@gmail.com>]

Hi, perf hackers

I have other question.
As I know, perf also supports RAPL(running average power limit )
for power consumption measurements.

And as I understand, the amount of power consumption is estimated
by using hardware performance counters and I/O models (sure, in 
availableintel CPUs).

And I've not found power consumption measurements for ARM (likeCortex-A9)
except for using tools like ARM Energy Probes and Linux EAPTools.

But as I know , The Cortex-A9 Core Platform has dynamic scaling 
ofvoltage and frequency.
(Dynamic Voltage and Frequency Scaling (DVFS))

Have you ever tried to measure power consumption on ARM using thingslike 
DVFS?

and I also wonder how to use perf to measure power consumption on 
available intel CPU.

- Taeung -