Would an e.g. bm_dict.py in [1] be a good place for a few benchmarks of
dict; or is there a more appropriate project for authoritatively measuring
performance regressions and optimizations of core {cpython,} data
structures?[1] https://github.com/python/pyperformance/tree/master/pyperformance/benchmarks (pytest-benchmark looks neat, as well. an example of how to use pytest.mark.parametrize to capture multiple metrics might be helpful: https://github.com/ionelmc/pytest-benchmark ) Its easy to imagine a bot that runs some or all performance benchmarks on a PR when requested in a PR comment; there's probably already a good way to do this? On Wed, Sep 16, 2020, 10:44 PM Wes Turner <wes.tur...@gmail.com> wrote: > That sounds like a worthwhile optimization. FWIW, is this a bit simpler > but sufficient?: > > python -m timeit -n 2000 --setup "from uuid import uuid4; \ > o = {uuid4().hex: i for i in range(10000)}" \ > "dict(**o)" > > Is there a preferred tool to comprehensively measure the performance > impact of a PR (with e.g. multiple contrived and average-case key/value > sets)? > > > On Wed, Sep 16, 2020, 7:07 PM Marco Sulla <marco.sulla.pyt...@gmail.com> > wrote: > >> Well, it seems ok now: >> https://github.com/python/cpython/compare/master...Marco-Sulla:master >> >> I've done a quick speed test and speedup is quite high for a creation >> using keywods or a dict with "holes": about 30%: >> >> python -m timeit -n 2000 --setup "from uuid import uuid4 ; o = >> {str(uuid4()).replace('-', '') : str(uuid4()).replace('-', '') for i >> in range(10000)}" "dict(**o)" >> >> python -m timeit -n 10000 --setup "from uuid import uuid4 ; o = >> {str(uuid4()).replace('-', '') : str(uuid4()).replace('-', '') for i >> in range(10000)} ; it = iter(o) ; key0 = next(it) ; o.pop(key0)" >> "dict(o)" >> >> Can I do a PR? >> _______________________________________________ >> Python-ideas mailing list -- python-ideas@python.org >> To unsubscribe send an email to python-ideas-le...@python.org >> https://mail.python.org/mailman3/lists/python-ideas.python.org/ >> Message archived at >> https://mail.python.org/archives/list/python-ideas@python.org/message/QWXD2D4SC6XHZLV3QA4TMGMI7Z7SAJ2R/ >> Code of Conduct: http://python.org/psf/codeofconduct/ >> >
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