[Python-Dev] Python 3.5 on VC14 (original) (raw)

Antoine Pitrou antoine at python.org
Tue Jun 10 20:26:33 CEST 2014

Le 10/06/2014 12:30, Steve Dower a écrit :

I ran a quick test with profile-guided optimization (PGO, pronounced "pogo"), which has supposedly been improved since VC9, and saw a very unscientific 20% speed improvement on pybench.py and 10% size reduction in python35.dll. I'm not sure what we used to get from VC9, but it certainly seems worth enabling provided it doesn't break anything. (Interestingly, PGO decided that only 1% of functions needed to be compiled for speed. Not sure if I can find out which ones those are but if anyone's interested I can give it a shot?)

I would recommend using the non-trivial suite of benchmarks at http://hg.python.org/benchmarks (both for the profiling and the benchmarking, though you may want to use additional workloads for profiling too)

Regards

Antoine.

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