Fortunes is not IO bound. Plaintext bench definitely is and node is around 8x slower than the fastest frameworks. Node is nowhere near raw netty performance in

Fortunes is not IO bound. Plaintext bench definitely is and node is around 8x slower than the fastest frameworks. Node is nowhere near raw netty performance in most situations and will never be. Js is single threaded, dynamically typed, and doesn't have low enough level access to the OS. Netty has a native network IO interface on linux. Node is pretty respectable but netty is basically the fastest thing there is unless you're doing C. It even uses native zero copy buffers with the ByteBuf implementation, something js doesn't (and cannot) do with its dynamic typing. The JVM has had a much longer period of relentless optimization and the language was designed to be well optimized. Js will never escape the performance penalty of dynamic typing and other decisions without a rewrite