Reid Kleckner <rnk <at> mit.edu> writes: > > I think you're right about the number of collisions, though. CPython > dicts use a pretty low load factor (2/3) to keep collision counts > down. One of the major benefits cited in the paper is the ability to > maintain performance in the face of higher load factors, so I may be > able to bump up the load factor to save memory. This would increase > collisions, but then that wouldn't matter, because resolving them > would only require looking within two consecutive cache lines.
Why wouldn't it matter? Hash collisions still involve more CPU work, even though if you're not access memory a lot. Antoine. _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
