[Python-Dev] Embedded Python startup is slow (original) (raw)

Thomas Heller theller at ctypes.org
Thu Mar 24 16:23:29 CET 2011

Am 24.03.2011 12:18, schrieb "Martin v. Löwis":

1. Is there anything I can do at compile time to tell Python these files don't exist and avoid trying to open them? If you disable dynamic loading of extension modules, the number of stat calls will go down significantly.

2. Is it possible to make python first try and open the ".pyc" and only then look for ".py" ? If you then further reduce sys.path, and zip up the standard library .pyc files, you get further reductions.

On my embedded ARM system (400MHz ARM926EJ-S, linux 2.6.38) Python starts up even slower when the standard library is in a zip-file. The effect is worse when the zip-file is compressed, but the slow-down is still there if the zip-file is not compressed.

Thomas

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