Microsoft Technology Licensing, LLC

Russell P Blake

David Earl Heckerman

Robert F Day

John S Breese

David O Hovel

Robert I Davidson

A system and method for determining a workload placed on a target computer system during execution of a specified computer program. The system receives a set of performance measurements representing the performance of the target computer system during execution of the specified computer program. The system then identifies a plurality of workloads and for each identified workload, uses a model of the target computer system to predict a set of performance measurements that would results when a computer program that places the identified workload on the target computer system is executed. The system selects the identified workload whose set of predicted performance measurements most closely matches the received set of performance measurements as the determined workload that was place on the target computer system during execution of the specified computer program. The system uses the selected workload to predict the performance of the specified computer program on the target computer system with various different configurations. The system also determines the resource that is a bottleneck for each of the different configurations.

Automatic bottleneck detection by means of workload reconstruction from

A simulation system to simulate the execution of a computer program. The computer program is developed for invoking operating system functions of a first operating system. Each operating system function performs a behavior in accordance with passed parameters. The simulation system generates a log during the execution of the computer program under control of the first operating system. The log includes an indication of each invocation of an operating system function by the computer program and an indication of each parameter passed to the operating system function by the computer program and the current time. The logged execution is then simulated by the simulation system on a second operating system. The simulation system invokes an operating system function of the second operating system to perform a behavior similar to the behavior performed by each logged invocation of the operating system function of the first operating system in accordance with the passed parameters. Comparison of the functionality, reliability, and performance of the two systems are thereby enabled.

Growing community of inventors

Issaquah, WA, United States of America

Russell P Blake