Hardware Monitoring of Real-Time Computer System Performance

This paper describes the planning and execution of a recent experiment which utilized a hardware monitor- ing device and associated analysis programs to evaluate the performance of a computer system which is employed for real-time satellite command and control. The evaluated system was the portion of the United States Air Force Satellite Control Facility Real-Time Data System, located in Sunnyvale, California. Communication line, processor, and channel utilization were analyzed, as was the interaction of Executive, Input/Output, and Application software modules.