Hi taeung, On Tue, 12 Aug 2014 17:20:45 +0900, taeung wrote: > 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?
You may want to look at powertop - see https://01.org/powertop . > > 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 -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html