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Heuristic (Intelligent) Operating System Control Technique of Start/Stop I/O Disclosure Number: IPCOM000040727D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02

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Batalden, GD Gregg, LE Sheppard, FP Spencer, RD [+details]


This technique is used to dynamically control terminal response time in connection with a data processor. The goal is, of course, to first minimize the terminal response time. However, as the workload increases, less processor time is available to service workstation I/O. Therefore, as workload increases, it is desirable to slow terminal response time in a controlled manner instead of getting into a situation where there is thrashing and response time becomes very erratic, unpredictable, and possibly very different between workstations. The technique very efficiently monitors both the time the processor spends servicing terminal requests and the overall system workload. As the processor becomes busier, the service to terminals is reduced by reducing the baud rate which is being used.