Not to thread-crash, but in case you missed it, we posted the results of Round 3 of our web frameworks and platforms benchmarking last week [1]. Seems relevant given your comment about hosting costs.
This round includes many more community contributions including more Scala, Erlang, Haskell, Python, Java, PHP, etc. And Go 1.1.
Topaz is also a really early experiment that supports a pretty small subset of ruby. I really hope it gets developed into a real, useful ruby vm but at the moment it is not even worth considering.
This round includes many more community contributions including more Scala, Erlang, Haskell, Python, Java, PHP, etc. And Go 1.1.
[1] http://www.techempower.com/benchmarks/#section=data-r3