In my previous post Modern framework comparison I presented performance tests, which compared Ruby On Rails, Django and Symfony2. After recieving a feedback in comments I decided to run this benchmark one more time on my own laptop (instead of on my hosting). The reason was simple: enviroment was outdated.
There were some overall performance increases were seen, but some statistics were higher - the "time per request" for all of them grew, some by quite a bit. He presents these benchmarks with a caveat, though:
You should never choose framework based on benchmarks. Those shows them from one point of view, but there are plenty of other aspects, such as support, community, maturity, number of ready to use components.