Abstract: A tool is provided to manage service instances for request processing that includes a monitor component, a manager component, and a configuration component. The monitor component is operable to determine a depth of message requests in a queue. The manager component is operable to manage a number of service instances processing the message requests. The configuration component is operable to set a threshold depth of message requests in the queue such that when the monitor component determines the depth of message requests in the queue exceeds the threshold, the monitor component initiates additional service instances to process the message requests.

Abstract: A system to load test a computer system is provided. The system comprises a test script to generate transactions including a basis transaction, the basis transaction operable to initiate a conversation with a stateful enterprise java bean, and a non-basis transaction. The system also comprises a forecast and a transaction iteration calculator, the transaction iteration calculator operable to determine how often the non-basis transaction executes relative to the basis transaction. For a non-basis transaction having a forecast less than the forecast of the basis-transaction, the non-basis transaction executes once if the number given by a randomly selected number between zero and the basis transaction forecast is less than the forecast of the non-basis transaction forecast and zero times otherwise. For a non-basis transaction having a forecast more than the forecast of the basis-transaction, the non-basis transaction may execute according to another calculation. A script controller is also provided.