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In multiprocessor systems, passive replication is a technique that trades processing power for increased reliability. One approach of passive replication, called primary-backup task scheduling, is often used in real-time multiprocessor systems to ensure that deadlines are met in spite of faults. Briefly, it consists in scheduling a secondary task conditionally, in such a way that the secondary task...
In this paper we present an approach for scheduling with preemption for fault-tolerant embedded systems composed of soft and hard real-time processes. We are interested to maximize the overall utility for average, most likely to happen, scenarios and to guarantee the deadlines for the hard processes in the worst case scenarios. In many applications, the worst-case execution times of processes can...
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