What does "Million Service Units (MSUs)" measure?

"Million Service Units (MSUs)" is a metric used primarily in mainframe environments to quantify the processing work done by the system. This measurement reflects the amount of computational work completed in a specified time frame, typically one hour. It serves as a valuable indicator for evaluating system performance, efficiency, and capacity planning, especially in environments where resource management is critical.

This metric is essential for understanding the workload that the system can handle over a given period, making it significant for determining resource allocation, cost management, and optimizing performance. The context of processing work involved in calculating MSUs emphasizes its role in assessing system capabilities rather than merely counting users, transactions, or data volume.