On Fri, 20 Jan 2017 22:30:16 +0900 INADA Naoki <songofaca...@gmail.com> wrote: > > > > 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. > > I agree with you. But I have similar idea: split only PyGc_Head (3 words).
That sounds like an interesting idea. Once an object is created, the GC header is rarely accessed. Since the GC header has a small constant size, it would probably be easy to make its allocation very fast (e.g. using a freelist). Then the GC header is out of the way which increases the cache efficiency of GC-tracked objects. 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
