Seth Davis has put together a github repository with some benchmarking for some of the most common web frameworks - both PHP and not. His statistic is "requests per second" in a few scenarios: a "hello world" string test, a test with a database connection and one with a templated response.
It should also be noted that my goal here was not necessarily to figure out how fast each framework could perform at its most optimized configuration (although built-in caching and other performance tweaks were usually enabled if the default configuration permitted it), but rather to see what a minimal "out-of-the-box" experience would look like.
Current results (as summed up in the current README) are for frameworks that include:
- Pyramid (Python)
- Django (Python)
- Sinatra (Ruby)
- CodeIgniter (PHP)
- Yii (PHP)
- Symfony (PHP)