That's an interesting point. It would add quite a bit of extra entries to the code, but it would be interesting to see all languages run with the latest and prior major language versions. That quickly gets out of control though. Especially when you consider some languages implemented on others (languages that sit on top of the JVM, for example).

Ah, I was wondering why they weren't higher up. I hope MIO makes it into the next round.

Still seems strange to me that they're that low.

Yeah, I am currently learning Haskell and was surprised by the apparent low performance of Yesod and Snap in comparison to the faster frameworks.

I am wondering if I should spend more time on Clojure instead, as it seems to be significantly higher in the ratings.

The next version of GHC should improve those numbers significantly, but I would also note that there are much more significant reasons to consider using Haskell than the difference between 37k and 43k req/s.

Yesod was only slightly slower than Clojure with Compojure. Also, an older version of Haskell was used.

I was very surprised that Compojure did not score higher in the rankings. I have several deployed apps with Compojure and it seems very performant.