2017-09-05 6:02 GMT-07:00 INADA Naoki <songofaca...@gmail.com>: > Hi, > > While I can't attend to sprint, I saw etherpad and I found > Neil Schemenauer and Eric Snow will work on startup time. > > I want to share my current knowledge about startup time. > > For bare (e.g. `python -c pass`) startup time, I'm waiting C > implementation of ABC. > > But application startup time is more important. And we can improve > them with optimize importing common stdlib. > > Current `python -v` is not useful to optimize import. > So I use this patch to profile import time. > https://gist.github.com/methane/e688bb31a23bcc437defcea4b815b1eb > > With this profile, I tried optimize `python -c 'import asyncio'`, logging > and http.client. > > https://gist.github.com/methane/1ab97181e74a33592314c7619bf342 > 33#file-0-optimize-import-patch > > This patch moves a few imports inside functions. I wonder whether that kind of change actually helps with real applications—doesn't any real application end up importing the socket module anyway at some point?
> With this small patch: > > logging: 14.9ms -> 12.9ms > asyncio: 62.1ms -> 58.2ms > http.client: 43.8ms -> 36.1ms > > I haven't created pull request yet. > (Can I create without issue, as trivial patch?) > > I'm very busy these days, maybe until December. > But I hope this report helps people working on optimizing startup time. > > Regards, > > INADA Naoki <songofaca...@gmail.com> > _______________________________________________ > 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/ > jelle.zijlstra%40gmail.com >
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