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Tue May 24 11:55:32 CEST 2011 · https://mail.python.org/pipermail/python-dev/2011-May/111604.html

2011/5/24 Sturla Molden <sturla at molden.no>:
>> Oh, and using explicit shared memory or mmap is much harder, because
>> you have to map the whole object graph into bytes.
>
> It sounds like you need PYRO, POSH or multiprocessing's proxy objects.

PYRO/multiprocessing proxies isn't a comparable solution because of
ORDERS OF MAGNITUDE worser performance. You compare here direct memory
access vs serialization/message passing through sockets/pipes.

POSH might be good, but the project is dead for 8 years. And this
copy-on-write is nice because you don't need changes/restrictions to
your code, or a special garbage collector.

Artur

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[Python-Dev] CPython optimization: storing reference counters outside of objects