[Python-Dev] int/float freelists vs pymalloc

"Martin v. Löwis" martin at v.loewis.de
Sat Feb 9 16:51:25 CET 2008

> Well, yes, it doesn't run out of memory, but if pymalloc needs
> to allocate lots of objects of the same size, then performance
> degrades due to the management overhead involved for checking
> the free pools as well as creating new arenas as needed.
> To reduce this overhead, it may be a good idea to preallocate
> pools for common sizes and make sure they don't drop under a
> certain threshold.

I still can't see why this could speed up anything. The total
time will be the same - whether you allocate them in advance
or on demand should make no difference.

In any case, if you think that you can improve things, please
submit a patch.


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