New submission from Alex Gaynor <alex.gay...@gmail.com>: All storing immutable objects in the memo dict does is slow stuff down, due to having a larger hash table, and on some other Python's causing hilarious levels of GC pressure. Using http://paste.pocoo.org/show/421310/ as a benchmark, CPython get's a 2x speedup on the deepcopy portion, and PyPy a 20x. Patch is attached.
---------- components: Library (Lib) files: d.diff keywords: patch messages: 139300 nosy: alex priority: normal severity: normal status: open title: When deepcopying, don't store immutable objects in the memo dict versions: Python 2.7, Python 3.3, Python 3.4 Added file: http://bugs.python.org/file22497/d.diff _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue12422> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
