[Python-Dev] Python startup time (original) (raw)

Benjamin Peterson benjamin at python.org
Thu Oct 10 16:26:25 CEST 2013

2013/10/9 Antoine Pitrou <solipsis at pitrou.net>:

Le Wed, 9 Oct 2013 10:29:30 +0200, Antoine Pitrou <solipsis at pitrou.net> a écrit :

Le Tue, 8 Oct 2013 15:43:40 -0400, Benjamin Peterson <benjamin at python.org> a écrit :

> 2013/10/8 R. David Murray <rdmurray at bitdance.com>: > > In this context, if we'd been really smart-lazy in CPython > > development, we'd have kept the memory and startup-time > > and...well, we probably do pretty well on CPU actually...smaller, > > so that when smartphones came along Python would have been the > > first high level language used on them, because it fit. Then > > we'd all be able to be much lazier now :) > > Even on desktop, startup time leaves a lot to be desired. That's true. Anyone have any ideas to improve it? It's difficult to identify significant contributors but some possible factors: - marshal.loads() has become twice slower in 3.x (compared to 2.7) - instantiating a class is slow (type('foo', (), {}) takes around 25ms here)

Do you mean microsecond?

$ ./python -m timeit "type('foo', (), {})" 10000 loops, best of 3: 25.9 usec per loop

-- Regards, Benjamin

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