Power consumption measurements for ARM
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 -
Hi taeung,
Quoted 13 lines · taeung
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.
Quoted 6 lines
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?
You may want to look at powertop - see https://01.org/powertop .
Quoted 3 lines
and I also wonder how to use perf to measure power consumption on available intel CPU.
Please check https://lkml.org/lkml/2013/11/12/393 .
Thanksm,
Namhyung