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This paper derives closed form upper bounds on the response times of tasks in fixed priority real-time systems. These bounds are valid for tasks with arbitrary deadlines, release jitter, and blocking. Response time upper bounds are given for tasks that are scheduled pre-emptively, cooperatively with intervals where pre-emption is deferred, and non-preemptively. The set of upper bounds for n tasks...
Efficient exact schedulability tests are required both for on-line admission of applications to dynamic systems and as an integral part of design tools for complex distributed real-time systems. This paper addresses performance issues with exact response time analysis (RTA) for fixed priority preemptive systems. Initial values are introduced that improve the efficiency of the standard RTA algorithm...
This paper focuses on priority assignment for realtime systems using fixed priority scheduling. It introduces and defines the concept of a "robust" priority ordering: the most appropriate priority ordering to use in a system subject to variable amounts of additional interference from sources such as interrupts, operating system overheads, exception handling, cycle stealing, and task execution...
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