On Nov 9, 9:14 am, "Chris Mellon" <[EMAIL PROTECTED]> wrote: > The heavy use of dicts is one of the problems - they're all over the > place and even if you removed the GIL, a "global dict lock" would give > essentially the same effect. And a per-dict lock means that there will > be a *lot* more locking and unlocking, which means a slower > interpreter.
It's worse than that. Not only are they slower for a single thread, but when using multiple threads the cores will contend over the cache lines containing the locks, leaving you yet slower still! I've starting putting together a site explaining my approach to solving these problems: http://code.google.com/p/python-safethread/ -- Adam Olsen, aka Rhamphoryncus -- http://mail.python.org/mailman/listinfo/python-list
