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Historically safety-critical real-time systems have been implemented using a cyclic executive (CE). Here a series of frames (minor cycles) are executed in sequence. Once the series is complete the sequence is repeated. The duration of the full sequence is often known as the major cycle. Within each frame, units of computation (jobs) are executed, again in sequence. Although there are a number of drawbacks...
For preemptive scheduling with shared cache, different tasks may cause interference in the shared cache, leading to Cache-Related Preemption Overhead (CRPD). Cache partitioning is a well-known technique for mitigating unpredictable cache interference in preemptive scheduling, but it reduces cache space available to each task, causing an increase in task execution time. Non-preemptive scheduling algorithms...
The Quasi-Partitioning Scheduling algorithm optimally solves the problem of scheduling a feasible set of independent implicit-deadline sporadic tasks on a symmetric multiprocessor. It iteratively combines bin-packing solutions to determine a feasible task-to-processor allocation, splitting task loads as needed along the way so that the excess computation on one processor is assigned to a paired processor...
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