Both 'pypy' and 'gevent' are supposed to provide high performance. Pypy is supposedly faster than CPython, while gevent is based on co-routines and greenlets, which supposedly makes for a faster web server.
However, they're not compatible with each other.
I'm wondering which setup is more efficient (in terms of speed/performance):

The builtin Flask server running on pypy

or:

The gevent server, running on CPython
Builtin flask server is a BaseHTTPServer or so, never use. The best scenario is very likely tornado + pypy or something like that. Benchmark before using though. It also depends quite drastically on what you're doing. The web server + web framework benchmarks are typically hello world kind of benchmarks. Is your application really like that?
Cheers, fijal
Which setup is more efficient? Flask with pypy, or Flask with gevent?