New issue 2190: Possible performance regression from 2.6.1 to 4.0.0 https://bitbucket.org/pypy/pypy/issues/2190/possible-performance-regression-from-261
Tobias Oberstein: I've done some measurements comparing JSON and MsgPack serialization/deserialization performance https://github.com/oberstet/scratchbox/tree/master/python/serperf MsgPack deserialization seems significantly slower (>30%), e.g. PyPy 4.0.0: 23642935 objs/sec PyPy 2.6.1: 32081015 objs/sec Note: the MsgPack library used (https://github.com/msgpack/msgpack-python) runs pure Python code when on PyPy and uses PyPy's string builder (https://github.com/msgpack/msgpack-python/blob/master/msgpack/fallback.py). _______________________________________________ pypy-issue mailing list pypy-issue@python.org https://mail.python.org/mailman/listinfo/pypy-issue
