On Wed, Aug 10, 2011 at 9:09 PM, David Beazley <dave at dabeaz.com> wrote: > You're forgetting step 5. > > 5. Put fine-grain locks around all reference counting operations (or rewrite all of Python's memory management and garbage collection from scratch). ... > After implementing the aforementioned step 5, you will find that the performance of everything, including the threaded code, will be quite a bit worse. Frankly, this is probably the most significant obstacle to have any kind of GIL-less Python with reasonable performance. PyPy would actually make a significantly better basis for this kind of experimentation, since they *don't* use reference counting for their memory management. Cheers, Nick. -- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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