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Microprocessor Utilization Indicator Disclosure Number: IPCOM000067135D
Original Publication Date: 1979-Jun-01
Included in the Prior Art Database: 2005-Feb-20

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Rogers, LS [+details]


Response time in a program-controlled system is a function of the utilization level of the processor and storage. When utilization is low, minimum response times are expected. As utilization increases due to an increased number of tasks, response time increases. The exact effect is based in queuing theory, but in general as utilization increases past the 60 to 70 percent range, response time will increase at a much higher rate. In applications where response time becomes a human factor consideration, such as key entry, a way is needed to control utilization. If the program in the controller had a method to measure the processor utilization, nonessential tasks could be deferred as utilization exceeded an acceptable level.