Hard Real-Time Systems with Stochastic Execution Times: Deterministic and Probabilistic Guarantees

R. Santos, J. Santos, and J. Orozco


Real-time, stochastic, probabilistic guarantees


This article presents a method to calculate a lower bound on the probabilistic guarantee that soft real-time tasks of a soft/hard system meet their deadlines in successive instantiations. It is based on a suffcient, although not necessary, schedulability condition relating the work function at each deadline and the deadline itself. The method shows an acceptable tradeoff between exactness of results and simplicity of calculations.

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