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* Tony Finch:

> On Sun, 14 Feb 2010, Gé Weijers wrote:
>> Last time I looked at Python the interpreter used a single lock to make sure
>> that no two threads could be running inside the interpreter at the same time.
>> Python supports threads by serializing them. That helps with using blocking
>> system calls but not with performance.
> It's worse than that. Python's GIL is implemented so badly that you often
> get worse performance by adding processors.

I think this has been fixed. See


and subsequent threads.