[rdtsc]

Ha! Really cool. That was a fun fact!

Make was right there under my nose I just never imagined using it for anything but compiling and building things. In that case I was forced by circumstances (was developing on a constrained ancient version of RHEL), couldn't use GNU Parallel and someone suggested `make`. The use case of obvious once a co-worker mentioned it. But it was definitely It was one of the memorable "thinking outside the box" example as they say.