[pypy-dev] RinohType and PyPy2

[Maciej Fijalkowski]

no, the strbuf does improve stuff about 20-30% it's just not what I
was hoping for :-)

On Wed, Aug 5, 2015 at 4:51 PM, Brecht Machiels
<brecht__gmane at mos6581.org> wrote:
> Hello Maciej,
>
> Mmm, too bad. Thankfully, with PyPy 2.6.0, speed is about the same as for
> CPython. PyPy 2.2.1 was significantly slower.
>
> In any case, thanks for trying out the strbuf optimization. I'm sure it will
> be helpful for other applications. And we can rule this out as the cause of
> the low performance with RinohType.
>
> I've made some changes to make RinohType more suitable for benchmarking. You
> can find it here:
> branch pypy_benchmark of git at github.com:brechtm/rinohtype.git
>
> Simply run benchmark_pypy.sh (and benchmark_python.sh).
>
> You can change the length of the document by changing the 'repeat' parameter
> in examples/rfic2009/template.xml
>
> For repeat=500, PyPy 2.6.0 is about as fast as CPython 2.7.9
> For repeat=5000, PyPy = 214s and CPython = 227s
>
> If you think this benchmark is useful, please include it in
> http://speed.pypy.org
>
> Let me know if there's anything else I can do.
>
> Cheers,
> Brecht
>
>
> On Wed, 05 Aug 2015 09:52:23 +0200, Maciej Fijalkowski <fijall at gmail.com>
> wrote:
>
>> Hi Brecht
>>
>> We tried the strbuf with rinohtype and (after warmup) it's the speed
>> of cpython, which is bad.
>>
>> investigating some more....
>>
>> On Sun, Mar 2, 2014 at 12:34 AM, Brecht Machiels <brecht at mos6581.org>
>> 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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