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Scheduling Arbitrary-Deadline Sporadic Task Systems on Multiprocessors

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3 Author(s)
Andersson, B. ; Res. Group, Polytech. Inst. of Porto, Porto ; Bletsas, K. ; Baruah, S.

A new algorithm is proposed for scheduling preemptible arbitrary-deadline sporadic task systems upon multiprocessor platforms, with interprocessor migration permitted. This algorithm is based on a task-splitting approach - while most tasks are entirely assigned to specific processors, a few tasks (fewer than the number of processors) may be split across two processors. This algorithm can be used for two distinct purposes: for actually scheduling specific sporadic task systems, and for feasibility analysis. Simulation- based evaluation indicates that this algorithm offers a significant improvement on the ability to schedule arbitrary- deadline sporadic task systems as compared to the contemporary state-of-art. With regard to feasibility analysis, the new algorithm is proved to offer superior performance guarantees in comparison to prior feasibility tests.

Published in:

Real-Time Systems Symposium, 2008

Date of Conference:

Nov. 30 2008-Dec. 3 2008