John Keeping <john@xxxxxxxxxxxxx> writes: > On Tue, Feb 11, 2014 at 03:41:55PM +0100, David Kastrup wrote: >> Duy Nguyen <pclouds@xxxxxxxxx> writes: >> >> > Would perf help? No changes required, and almost no overhead, I think. >> >> Not useful. It would be probably nice for nailing down the performance >> gains when the work is finished so that future regressions will be >> noticeable. It's reasonable easy to create a test case that will take >> hours with the current git-blame and would finish in seconds with the >> improved one. >> >> But it's not useful at all for figuring out the hotspots within the >> git-blame binary. > > I would have thought the annotation described at [1] is exactly what > you're looking for, isn't it? > > Alternatively, I've had some success with callgrind and kCachegrind in > the past. > > [1] > https://perf.wiki.kernel.org/index.php/Tutorial#Source_level_analysis_with_perf_annotate Misunderstanding on my part. I thought this was about the "make perf" Makefile target. I'll have to take a look at what the perf utility does. Thanks for the clarification. -- David Kastrup -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html