It is worth restating that this result does not apply in all cases, and that additional threads may give a higher message rate than extra execution groups for other workloads.

The fewer queue managers that input and output messages have to traverse the cheaper the cost of processing the messages and therefore the higher the message rate that can be obtained.

In reality, throughput is affected by a large number of variables including message arrival rate, message processing time, multiprocessing and scheduling, and resource constraints.