On Sat, Nov 19, 2016 at 02:32:26AM +0100, Victor Stinner wrote: > Hi, > > I'm happy because I just finished an article putting the most > important things that I learnt this year on the most silly issue with > Python performance: code placement. > > https://haypo.github.io/analysis-python-performance-issue.html > > I explain how to debug such issue and my attempt to fix it in CPython. > > I hate code placement issues :-) I hate performance slowdowns caused > by random unrelated changes... > > Victor
Thanks *a lot* victor for this great article. You not only very accurately describe the method you used to track the performance bug, but also give very convincing results. I still wonder what the conclusion should be: - (this) Micro benchmarks are not relevant at all, they are sensible to minor factors that are not relevant to bigger applications - There is a generally good code layout that favors most applications? Maybe some core function from the interpreter ? Why does PGO fails to ``find'' them? Serge _______________________________________________ Speed mailing list Speed@python.org https://mail.python.org/mailman/listinfo/speed
