Mean service time for context source events (in microseconds).

C# |
public long contextSourceEventsMeanServiceTime()

Mean service time for context source events (in microseconds). This is an
exponentially weighted moving average (weighted to more recent) for
accumulated context source event service durations, measured from the point of
de-queuement until the application has finished servicing the event.
Configuration option queue_service_time_enabled must be activated.