[Python-Dev] Reduce memory footprint of Python (original) (raw)
Antoine Pitrou solipsis at pitrou.net
Tue Oct 8 11:23:59 CEST 2013
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For the record, if you want to reduce memory footprint of Python on a x86-64 bit, you can use the "x32" ABI for which Debian/Ubuntu provide some support.
(install the required base packages and use CFLAGS=-mx32 LDFLAGS=-mx32)
Regards
Antoine.
Le Sun, 6 Oct 2013 17:32:37 +0200, Victor Stinner <victor.stinner at gmail.com> a écrit :
Hi,
Slowly, I'm trying to see if it would be possible to reduce the memory footprint of Python using the tracemalloc module. First, I noticed that linecache can allocate more than 2 MB. What do you think of adding a registry of "clear cache" functions? For exemple, re.purge() and linecache.clearcache(). gc.collect() clears free lists. I don't know if gc.collect() should be related to this new registy (clear all caches) or not. The dictionary of interned Unicode strings can be large: up to 1.5 MB (with +30,000 strings). Just the dictionary, excluding size of strings. Is the size normal or not? Using tracemalloc, this dictionary is usually to largest memory block. unittest doesn't look to release memory (the TestCase class) after the execution of a test. testimport.testmodulewithlargestack() creates a large Python module and import it, but it does not unload it. Should I open a separated issue for each idea to track them in the bug tracker, or a global issue? Victor
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