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

Cesare Di Mauro cesare.di.mauro at gmail.com
Thu Jul 20 15:38:23 EDT 2017

2017-07-20 19:23 GMT+02:00 Victor Stinner <victor.stinner at gmail.com>:

2017-07-20 19:09 GMT+02:00 Cesare Di Mauro <cesare.di.mauro at gmail.com>: > I assume that Python loads compiled (.pyc and/or .pyo) from the stdlib. That's something that also influences the startup time (compiling source vs loading pre-compiled modules).

My benchmark was "python3 -m perf command -- python3 -c pass": I don't explicitly remove .pyc files, I expect that Python uses prebuilt .pyc files from pycache. Victor

OK, that should be the best case.

An idea to improve the situation might be to find an alternative structure for .pyc/pyo files, which allows to (partially) "parallelize" their loading (not execution, of course), or at least speed-up the process. Maybe a GSoC project for some student, if no core dev has time to investigate it.

Cesare

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