[issue11849] glibc allocator doesn't release all free()ed memory

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

> > The MALLOC_MMAP_THRESHOLD improvement is less visible here:
> >
> 
> Are you running on 64-bit ?

Yes.

> If yes, it could be that you're exhausting M_MMAP_MAX (malloc falls
> back to brk when there are too many mmap mappings).
> You could try with
> MALLOC_MMAP_THRESHOLD_=1024 MALLOC_MMAP_MAX_=16777216 ../opt/python
> issue11849_test.py

It isn't better.

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<http://bugs.python.org/issue11849>
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