STINNER Victor added the comment: More debug traces, Windows 7 with HPET enabled:
asyncio: IocpProactor.select(10.0000 ms) took 9.486 ms (monotonic=0.000 ms, clock res=15.600 ms) asyncio: IocpProactor.select(0.0010 ms) took 0.942 ms (monotonic=0.000 ms, clock res=15.600 ms) asyncio: IocpProactor.select(0.0000 ms) took 0.553 ms (monotonic=0.000 ms, clock res=15.600 ms) asyncio: IocpProactor.select(0.0000 ms) took 0.517 ms (monotonic=0.000 ms, clock res=15.600 ms) asyncio: SelectSelector.select(0.1000 ms) took 2.276 ms (monotonic=0.000 ms, clock res=15.600 ms) asyncio: SelectSelector.select(1.0000 us) took 30.810 us (monotonic=0.000 us, clock res=15600.100 us) asyncio: SelectSelector.select(0.0100 us) took 30.350 us (monotonic=0.000 us, clock res=15600.100 us) asyncio: SelectSelector.select(0.0001 us) took 28.930 us (monotonic=0.000 us, clock res=15600.100 us) Note: IocpProactor.select() rounds the timeout aways from zero with a resolution of 1 ms, whereas SelectSelector.select() rounds towards zero. It may explain why IocpSelector sleeps at least 500 us, whereas SelectSelector sleeps sometimes 30 us. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue20505> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
