Messages in this thread | | | From | nitin <> | Subject | Re: [PATCH v3 1/3] cpufreq: ondemand: Change the calculation of target frequency | Date | Mon, 23 Feb 2015 16:42:17 +0000 (UTC) |
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Rafael J. Wysocki <rjw <at> sisk.pl> writes:
> > On Sunday, June 09, 2013 11:14:49 PM Borislav Petkov wrote: > > On Sun, Jun 09, 2013 at 10:58:51PM +0200, Rafael J. Wysocki wrote: > > > Can you possibly prepare a graph showing both the execution time > > > and energy consumption for several different loop durations in your > > > program (let's keep the 5000 us sleep for now), including multiples of > > > sampling_rate as well as some other durations? > > > > Judgind by the times in C0 one of the cores spent, this small program > > is single-threaded and is a microbenchmark. > > Yes, it is single-threaded, but that can be easily addressed by running > multiple copies of it in parallel. > > And yes, it is a microbenchmark, -> > > > And you know how optimizing against a microbenchmark doesn't really make > > a lot of sense. > > -> but this is more about finding possible issues that about optimizing. > > I'm regarding this change as a substantial code simplification in the first > place, both in terms of conceptual complexity and the actual code size, so I'd > like to know what is *likely* to be affected by it (be it a microbenchmark or > whatever). > > IOW, try to play a devil's advocate and find something that get's worse after > applying these changes. If we can't find anything like that, there won't be > any reason not to apply them. > > > I wonder if lmbench or aim9 or whatever would make more sense to try here... > > I think we'll need to try them too. > > Thanks, > Rafael >
Hi, I am working on integrating the cpufreq interactive governor with scheduler. We would like to verify our results using aim9 benchmark on Linux v3.10.28 over Android v4.4.4. Is there a patch available for porting aim9 benchmark tools on Android? Right now I am unable to compile it using the gcc provided with Android NDK toolchain in the arm-linux-androideabi-4.8.
Thanks, Nitin
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