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 <tinches...@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@python.org > https://mail.python.org/mailman/listinfo/pypy-dev >
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