TechEmpower/FrameworkBenchmarks — pull request #903 by methane (2014-07-03 16:53:19+00:00)
Title: Downgrade gunicorn for tornado worker

Gunicorn 19.0 has regression. Tornado worker doesn't works with it.
Tornado is best worker for PyPy (speed and keep-alive).
Until Gunicorn 19.1 is released, downgrade to 18.0.