CT-PT: Certified Tester Performance Testing

You are managing testing for an existing distributed system that manages inventories of automobile and light-truck tires from multiple warehouses across the country. The system is being enhanced to track incoming restocking shipments at the point of entry to the warehouse and outbound sales shipments at the point of shipment from the warehouse, all executed in real time. System loads have traditionally peaked on Mondays because of accumulated demand from the preceding weekend.

You have confirmed the test objectives with all stakeholders. In addition, you have created and verified an operational profile that emulates entities submitting large bulk orders of 1600 tires or more per transaction. You have also verified and created this profile for peak processing at an average rate of 25 transactions per hour, with a processing time of 0.5 milliseconds per transaction.

Assuming that you are using 16 virtual users, which formula correctly calculates system throughput?