django: on pypy, psyco, unladen swallow or cpython, which one is the fastest?

Has anyone tried to compare those python implementations?

• pypy
• psyco
• unladen swallow (is it dead?)
• cpython

I am planning to squeeze something more from my server.

Setup:

• Django 1.3
• Python 2.7
• Psycopg2 1.4
• apache 2
• mod_wsgi
• and... Windows server

I am not a windows fanboy, but it has to be :{ There is some legacy code working on it.

http://reinout.vanrees.org/weblog/2011/06/06/django-and-pypy.html links to some benchmarks that compare pypy and cpython using a small django framework (so I guess it just benchmarks how long it takes to create a view). You may be able to use the same benchmark with other frameworks, though it's far from being an all inclusive speed test.

I believe unladen swallow was discontinued.