On Fri, 20 Jan 2017 13:40:14 +0100 Christian Heimes <christ...@python.org> wrote: > > IIRC Thomas Wouters (?) has been working on a patch to move the ref > counter out of the PyObject struct and into a dedicated memory area. He > proposed the idea to improve cache affinity, reduce cache evictions and > to make CoW more efficient.
> Especially modern ccNUMA machines with > multiple processors could benefit from the improvement, but also single > processor/multi core machines. Moving the refcount out of the PyObject will probably make increfs / decrefs more costly, and there are a lot of them. We'd have to see actual measurements if a patch is written, but my intuition is that the net result won't be positive. Regards Antoine. _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
