CumulativeNormalizedRunnableGoroutines returns the sum, over all seconds since the program started, of the average number of runnable goroutines per GOMAXPROC.

RecentNormalizedRunnableGoroutines returns a recent average of the number of runnable goroutines per GOMAXPROC.

RegisterRunnableCountCallback registers a callback to be run with the runnable and procs info, every 1ms, unless cpu load is very low (see the commentary for samplePeriodShort).

RegisterSettings provides a settings object that can be used to alter callback frequency.

UnregisterRunnableCountCallback unregisters the callback to be run with the runnable and procs info.

RunnableCountCallback is provided the current value of runnable goroutines, GOMAXPROCS, and the current sampling period.