Hi Floris, On Mon, Nov 21, 2005 at 04:41:04PM +0000, Floris Bruynooghe wrote: > > Now Brett's > > student, Floris, extended hotshot to allow custom timers. This is > > essential, because it enables testing. The timing parts of hotshot were > > not tested previously. > > Don't be too enthousiastic here.
Testing is done by feeding the profiler something that is not a real timer function, but gives easy to predict answers. Then we check that the profiler accounted all this pseudo-time to the correct functions in the correct way. This is one of the few way to reliably test a profiler, that's why it is essential. > Iirc I did compare the output of test_profile between profile and my > wrapper. This was one of my checks to make sure it was wrapped > correctly. So could you tell me how they are different? test_profile works as I explained above. Running it with hotshot shows different numbers, which means that there is a bug (and not just some difference in real speed). More precisely, a specific number of the pseudo-clock-ticks are dropped for no reason other than a bug, and doesn't show up in the final results at all. A bientot, Armin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
