Terminal 1:
$ ros2 run minimal_realtime_loop minimal_executor_loop
Terminal 1:
$ ros2 run minimal_realtime_loop minimal_wait_set_loop
Terminal 2:
$ ros2 run minimal_realtime_loop minimal_executor_loop
Terminal 1:
$ ros2 run minimal_realtime_loop minimal_polling_subscription_loop
Terminal 2:
$ ros2 run minimal_realtime_loop minimal_executor_loop