On 10/28/2013 4:37 PM, Jesús Díaz Vico wrote: > Hello, > > I'm trying to estimate the power consumption (besides some other > properties) of a custom program. During my tests, I execute my program > several times (it is not a > background process) with powertop running. My doubt is: how does powertop > deal with these multiple executions? > > I'd guess that it averages over the number of executions, because I'm > obtaining very similar power consumption measurements for both 500 and 5000 > executions of my program > (335 mW and 364 mW, respectively). Still, there is the possibility that > powertop only keeps the estimation corresponding to the last execution... > > Thanks. > by default, powertop will group programs with the same name into one bucket for display purposes.

On 10/29/2013 12:23 AM, Jesús D wrote: > Thank you, Arjan. > > But my question is how does powertop group programs with the same name. > > Unless I'm doing something wrong, I doubt that it is just adding the > power consumption of all the independent executions. I say this because > powertop estimates a > consumption of 335 mW for 500 executions, and a consumption of 364 mW for > 5000. I am configuring the monitorization time with the --time parameter > (with a value long enough > to cover all the 500 or 5000 executions). > > Is it calculating an average then? > > remember Watts are a "Joules per second" measure!