[pypy-dev] RinohType and PyPy2

Maciej Fijalkowski fijall at gmail.com
Sun Mar 2 22:15:28 CET 2014

Hi Brecht.

I must say I've been trying to understand what's going on and I'm
failing so far. Thanks for a valuable benchmark! And yes, we're
working on improving the warmup time (ETA unknown though)

On Sun, Mar 2, 2014 at 12:11 PM, Brecht Machiels <brecht at mos6581.org> wrote:
> Thanks Maciej,
> sys._getframe was introduced by "magicsuper", which I used to avoid refactoring all super() calls. I've done that now and there shouldn't be any more sys._getframe calls. You can pull in this commit from the pypy2 branch.
> Unfortunately, this didn't improve performance much. PyPy now takes 26 seconds. Any other ideas?
> Best regards,
> Brecht
> ---- On Sun, 02 Mar 2014 08:19:35 +0100 Maciej Fijalkowski  wrote ----
>>the first obvious thing that jumps at me is your casual use of
>>sys._getframe - the JIT aborts in this case and proceeds to the
>>interpreter (so you pay the price for JITting, while you also pay the
>>prace for not having compiled assembler). That probably does not
>>explain everything, but please don't use sys._getframe in production
>>code if you want the JIT to be fast.
>>On Sun, Mar 2, 2014 at 12:34 AM, Brecht Machiels
>  wrote:
>>> Hello,
>>> I've managed to backport RinohType to Python 2 (took me only a couple of hours thankfully).
>>> Results on my Celeron T3000 (Arch Linux x86_64):
>>> CPython 3.3.4 14 s
>>> PyPy3 2.1.0-beta1 61 s
>>> CPython 2.7.6 15 s
>>> PyPy 2.2.1 35 s
>>> If you want to give it a try (no external dependencies):
>>> git clone --branch pypy2 https://github.com/brechtm/rinohtype.git
>>> cd rinohtype/examples/rfic2009
>>> rm -rf template.ptc; PYTHONPATH=../.. pypy template.py
>>> While PyPy2 performs better than PyPy3, it's still much slower than CPython. Is RinohType hitting a weak spot in PyPy? Any hints on what I can do to improve performance?
>>> Best regards,
>>> Brecht
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