Minimum time (in milliseconds) spent in message delivery
callbacks associated with LBM receivers, wildcard receivers, hot-failover
receivers. For the Java and .NET APIs, the overhead time spent in crossing
the managed/jni boundaries is included. This stat is only collected if
the context option receiver_callback_service_time_enabled is set to 1. SMX
receivers are excluded from these stats. THIS FIELD IS UNSUPPORTED.

C# |
public long receiveCallbackServiceTimeMin()

Minimum message delivery service time. THIS FIELD IS UNSUPPORTED.