I've reproduced the performance on the latest default (on OS X, FWIW). I'm starting to profile now.
Alex PS: Your namedtuple usage is fine. On Mon, Apr 28, 2014 at 8:43 PM, Robert Grosse <n210241048...@gmail.com>wrote: > Hi, while working on some MDP code, I discovered that it was several times > as slow under Pypy as CPython. Attached is a benchmark demonstrating this. > > On my computer, the benchmark takes 70.3 seconds under CPython 2.7.3 > 64bit, but it takes 273.6 seconds under > pypy-c-jit-71056-c8e3b8cbc843-win32, the latest version I could find. > > The code is not at all optimized, but I still found it strange that Pypy > did so much worse. The code doesn't seem that complex, but perhaps the > usage of nameduples is triggering pathological behavior from the JIT's > point of view. > > _______________________________________________ > pypy-dev mailing list > pypy-dev@python.org > https://mail.python.org/mailman/listinfo/pypy-dev > > -- "I disapprove of what you say, but I will defend to the death your right to say it." -- Evelyn Beatrice Hall (summarizing Voltaire) "The people's good is the highest law." -- Cicero GPG Key fingerprint: 125F 5C67 DFE9 4084
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