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In safety-critical cyber-physical systems, the usage of multicore platforms has been hampered by problems due to interactions across cores through shared hardware. The inability to precisely characterize such interactions can lead to worst-case execution time pessimism that is so great, the extra processing capacity of additional cores is entirely negated. In this paper, several techniques are proposed...
Mixed-criticality scheduling algorithms, which attempt to reclaim system capacity lost to worst-case execution time pessimism, seem to hold great promise for multi core real-time systems, where such loss is particularly severe. However, the unique nature of these algorithms gives rise to a number of major challenges for the would-be implementer. This paper describes the first implementation of a mixed-criticality...
The evolution of multicore platforms has led to much recent work on multiprocessor scheduling techniques for soft real-time workloads. However, end users routinely run such workloads atop general-purpose operating systems with seemingly good results, albeit typically on over-provisioned systems. This raises the question: when, if ever, is the use of an analysis-based scheduler actually warranted?...
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