The java based ruby, removes the GIL, which provides us real multithreading. Truffleruby is "A high performance implementation of the Ruby programming language

The java based ruby, removes the GIL, which provides us real multithreading. Truffleruby is "A high performance implementation of the Ruby programming language, built on GraalVM." If you prefer there is even a rust based ruby https://github.com/artichoke/artichoke https://github.com/artichoke/artichoke again, IMO, the microbenchmark, doesn't matter. What matters is the problem domain, whole stack and the whole "speed", including development, deployment and etc, and for some domains, ruby is the best and fast choice.