I've always suspected using "like really productive" languages creates it's own scalability problem in production. Ruby/Python/Node/PHP consuming anywhere from 2x to 15x the amount of energy and time as a language like Java/C# comes as no surprise, which likely means you'll need a corresponding increase in servers for particular use cases.

What's not a surprise is C stomping everything with a lead boot. I am surprised that Fortran is a lower than it is (considering its role in HPC/research). It's no surprise to see Java leading the virtual machine pack on speed, I thought it'd take a larger hit on energy consumption due to JIT.

But Rust, WOW. Have we finally created the perfect language? Always something I've wanted to learn, now I think I have a good reason!