Em Mon, Dec 02, 2013 at 11:57:44PM +0900, Namhyung Kim escreveu: > 2013-12-02 (월), 09:39 -0300, Arnaldo Carvalho de Melo: > > Em Mon, Dec 02, 2013 at 03:53:18PM +0900, Namhyung Kim escreveu: > > > From: Namhyung Kim <namhyung....@lge.com> > > > > > > Calculate elapsed time for each sample and record it. The elapsed > > > time is a diff between current sample->time and previous sample->time > > > which was saved for each evsel and cpu. > > > > Can you elaborate on why this is interesting to have? What meaning can > > one get from the sample->time - prev_sample->time? > > > > We need clearer changelogs... > > Sorry about that.. how about this? > > Sometimes users might want see a relation between value and time of a > sample. And the time itself is a very important information to have. > As the sample->period value is a diff of counter values between samples > it might make sense to add time-diff between samples into a hist entry. > > To do that, calculate elapsed time for each sample and record it. The > elapsed time is the diff between current sample->time and previous > sample->time which was saved for each evsel.
Much better! Thanks, and please consider adding this to the man page as well, in a followup patch. I'll add the above explanation to the patch, that, as I could read seems to not have had any nak, right? - Arnaldo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
