Sampling profiler for Ruby

Have a running Ruby program that you want to profile without restarting it? Want to profile a Ruby command line program really easily? You want rbspy! rbspy can profile any Ruby program just by running 1 simple command.rbspy lets you profile Ruby processes that are already running. You give it a PID, and it starts profiling. It's a sampling profiler, which means it's low overhead and safe to run in production.rbspy lets you record profiling data, save the raw profiling data to disk, and then analyze it in a variety of different ways later on.