Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment
Journal of the ACM (JACM)
The Phoenix Testbed
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We derive a simple mathematical model of the interaction of two tasks running concurrently on a uniprocessor. Specifically, we model the rate at which two periodic tasks will interrupt each other. The predictions of this model are supported by simulation experiments. From the model, we argue that placing reflexive control and cognitive control on different processors is not justified by the different time-scales over which they act, but is justified by the extent to which the higher priority task dominates the uniprocessor.