Really? Hello World is a great way to make sure an installation works correctly, but I seriously doubt anyone uses it to benchmark anything. Even a QBasic Hello World running in a DOS emulator should run pretty fast.

Have you seen evidence online of people using Hello World to benchmark Julia?

As for the Fibonacci sequence, the two-prong recursion can be quite slow for small indexes like 40, corresponding to 102334155. Try to use it with Project Euler Problem 2 in JavaScript, and you’ll be in for a painful wait.

So I think the Fibonacci sequence could be useful for benchmarking.