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In this paper a new laxity-based algorithm for scheduling real-time tasks on heterogeneous uniform multiprocessors is presented. In the proposed algorithm we have made use of laxity in two ways: Calculating the dynamic priority of tasks, and performing feasibility check. Besides, we have applied processor affinity to reduce the overhead in terms of task migration. The performance of this algorithm...
It has been proved that there is no optimal online scheduler for uniform parallel machines. Despite its non- optimality, EDF is an appropriate algorithm to use in such environments. However, its performance significantly drops in overloaded situations. Moreover, EDF produces a relatively large number of migrations which may prove unacceptable for use on some parallel machines. In this paper a new...
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