Here is an extensive set of performance benchmark results
from 14 Python web application servers, done by Nicholas Piël. "The top performers are clearly FAPWS3, uWSGI and Gevent. FAPWS3 has been designed to be fast and lives up the expectations, this has been noted by others as well as it looks like it is being used in production at Ebay. uWSGI is used successfully in production at (and in development by) the Italian ISP Unbit. Gevent is a relatively young project but already very successful. Not only did it perform great in the previous async server benchmark but its reliance on the Libevent HTTP gives it a performance beyond the other asynchronous frameworks.
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