[pypy-dev] Playing with PyPy and Django

[Omer Katz]

You need to warm up the JIT first.
Run the benchmark a 10,000 times on PyPy before measuring and you'll see
the real performance improvement.
Nevertheless, it does sound like you're hitting a performance bug(s)
somewhere. It's worth investigating.

2015-02-07 1:12 GMT+02:00 Tin Tvrtković <tinchester at gmail.com>:

> Hello, PyPy folks!
>
> While trying to speed up one of my Django sites, I noticed a new version
> of PyPy
> had just been released. So I grabbed a fresh download of PyPy 3 (since
> this is
> a Python 3 codebase) and tried taking it out for a spin.
>
> However, as far as I can see, whatever I try PyPy is consistently slower
> than
> CPython for this.
>
> Since this is a proprietary site, I've basically ripped out all the code
> except
> my settings.py and my requirements; and am benchmarking the Django admin
> index.
> The results are about the same.
>
> I've set up a small repo that can be used to reproduce the environment:
> https://github.com/Tinche/PyPy-Django-Playground. There's additional info
> in
> the README there.
>
> These tests have been carried out on Ubuntu Trusty, 64-bit. CPython 3 is
> the
> system Python, 3.4. PyPy has been downloaded from the official site and
> unzipped.
>
> So what I basically do is set up an admin session, and use the Django main
> admin
> page. 200 warmup requests, then 100 benchmarked requests, look at the mean
> request time.
>
> Some results:
>
> Django's runserver, DEBUG mode:
>
> PyPy3            485.389 [ms]
> CPython 3.4      105.777 [ms]
>
> Django's runserver, no debug:
>
> PyPy3             44.661 [ms]
> CPython 3.4       18.697 [ms]
>
> Gunicorn, 1 worker, no debug:
>
> PyPy3             28.615 [ms]
> CPython 3.4       13.532 [ms]
>
> I don't exactly claim to be an expert on benchmarking, but assuming my site
> is similar to the Django admin, CPython's gonna be giving me better
> performance.
> Also the debug runserver performance is kinda worrying. Nobody's going to
> be
> running this in production, but it makes development a little slower and
> more
> annoying than it should be.
>
> Is there anything to make PyPy more competitive in these kinds of
> scenarios?
>
> Kind regards,
> Tin
> _______________________________________________
> pypy-dev mailing list
> pypy-dev at python.org
> https://mail.python.org/mailman/listinfo/pypy-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/pypy-dev/attachments/20150207/425b31ae/attachment.html>