Ruby 2.1: Process.clock_gettime (tmm1.net)

Take a look at the other posts by @tmm1 as well to learn about cool new Ruby 2.1 things:

http://tmm1.net/ruby21-process-setproctitle/

http://tmm1.net/ruby21-fstrings/

http://tmm1.net/ruby21-method-cache/