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[Python-Dev] Benchmarks why we need PEP 576/579/580

Guido van Rossum guido at python.org
Sat Jul 21 13:55:03 EDT 2018 
I don’t think we can safely assume Python 3.7 has the same performance,
actually. A lot has changed.

On Sat, Jul 21, 2018 at 10:10 AM INADA Naoki <songofacandy at gmail.com> wrote:

> On Sun, Jul 22, 2018 at 1:28 AM Jeroen Demeyer <J.Demeyer at ugent.be> wrote:
> >
> > Hello,
> >
> > I finally managed to get some real-life benchmarks for why we need a
> > faster C calling protocol (see PEPs 576, 579, 580).
>
> Good job.  But I already +1 for adding support for extension callable type.
> Do you think this benchmark can be optimized more in future optimization
> which is possible by PEP 580, but not 576?
>
> >
> > I should mention that this was done on Python 2.7.15 (SageMath is not
> > yet ported to Python 3) but I see no reason why the conclusions
> > shouldn't be valid for newer Python versions. I used SageMath 8.3.rc1
> > and Cython 0.28.4.
>
> Do you mean you backport LOAD_METHOD and fastcall to Python 2.7
> for benchmarking?
> Reproducing it seems hard job to me...
>
> --
> INADA Naoki  <songofacandy at gmail.com>
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--Guido (mobile)
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