Hi Larry, On 31 May 2015 at 01:20, Larry Hastings <la...@hastings.org> wrote: > p.s. Supporting this patch also helps cut into PyPy's reported performance > lead--that is, if they ever upgrade speed.pypy.org from comparing against > Python *2.7.2*.
Right, we should do this upgrade when 2.7.11 is out. There is some irony in your comment which seems to imply "PyPy is cheating by comparing with an old Python 2.7.2": it is inside a thread which started because "we didn't backport performance improvements to 2.7.x so far". Just to convince myself, I just ran a performance comparison. I ran the same benchmark suite as speed.pypy.org, with 2.7.2 against 2.7.10, both freshly compiled with no "configure" options at all. The differences are usually in the noise, but range from +5% to... -60%. If anything, this seems to show that CPython should take more care about performance regressions. If someone is interested: * "raytrace-simple" is 1.19 times slower * "bm_mako" is 1.29 times slower * "spitfire_cstringio" is 1.60 times slower * a number of other benchmarks are around 1.08. The "7.0x faster" number on speed.pypy.org would be significantly *higher* if we upgraded the baseline to 2.7.10 now. A bientôt, Armin. _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
