On Tue, Aug 23, 2011 at 11:21 PM, Victor Stinner <victor.stin...@haypocalc.com> wrote: > Le 23/08/2011 15:06, "Martin v. Löwis" a écrit : >> >> Well, things have to be done in order: >> 1. the PEP needs to be approved >> 2. the performance bottlenecks need to be identified >> 3. optimizations should be applied. > > I would not vote for the PEP if it slows down Python, especially if it's > much slower. But Torsten says that it speeds up Python, which is surprising. > I have to do my own benchmarks :-)
As Martin noted, cache misses hurt performance so much on modern processors that making things use less memory overall can actually be a speed optimisation as well. Guessing where the remaining bottlenecks are is unlikely to be effective - profiling of the preliminary implementation will be needed. However, the idea that reducing the size of pure ASCII strings (which include all the identifiers in most code) by a factor of 2 or 4 (or so) results in a net speed increase definitely sounds plausible to me, even for non-string processing code. Cheers, Nick. -- Nick Coghlan | ncogh...@gmail.com | Brisbane, Australia _______________________________________________ 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
