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. Thanks, Namhyung -- 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/
