On Sat, Jan 18, 2020 at 03:35:29PM -0500, James Cassell wrote: > > On Thu, Jan 16, 2020, at 5:16 AM, Zbigniew Jędrzejewski-Szmek wrote: > > > > A quick benchmark: > > $ time python3 -c 'import importlib as i, pydoc_data.topics as t; > > [i.reload(t) for _ in range(10000)]' > > python3 -c 4.16s user 0.45s system 99% cpu 4.646 total > [...] > > sudo rm /usr/lib64/python3.7/pydoc_data/__pycache__/topics.cpython-37.* > > > > $ time python3 -c 'import importlib as i, pydoc_data.topics as t; > > [i.reload(t) for _ in range(1000)]' > > python3 -c 13.73s user 0.46s system 96% cpu 14.728 total > [...] > > But the effect of having *some* .pyc file is not. For this file (which > > is 600+kb), the difference is 147.28/4.646 ≈ 30 times. So we clearly > > need to keep the possibility of installing .pyc files, at least optionally. > > > > Thanks for doing these benchmarks! I think you misplaced a decimal in the > analysis, though; it's closer to 3 times performance difference, not 30 > times. (Unless I missed something.)
The number of loops is different (10k vs 1k), so the ratio I posted is correct. Zbyszek _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
