Is the lua implementation very new and/or incomplete? It seems to be missing from the benchmarks, and if it's lua 5.1, maybe it'll work with luajit?
[ed: Also interesting to note that the clojure version is much slower than scala/java. If nothing else, I guess it's an indication of performance gains that can be had by implementing parts of a clojure program in java (unless there's something off with the clojure implementation, of course.]
I'm rather hesitant to post any sort of benchmarks (since the existing ones suck so bad), but the using these, the lua 5.1.5 equivalents would be: 1, 1, 293
Lua does seem to be an odd one in that the short tests run quickly but this does not translate into iterations for the longer 10 second test. Perhaps the mal implementation is triggering bad GC behavior or something and that drags down the longer running tests. That's just speculation though. Again, please take the numbers with a mountain size grain of salt.
[ed: Also interesting to note that the clojure version is much slower than scala/java. If nothing else, I guess it's an indication of performance gains that can be had by implementing parts of a clojure program in java (unless there's something off with the clojure implementation, of course.]