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2008 Euromicro Conference on Real-Time Systems (2008)
July 2, 2008 to July 4, 2008
ISSN: 1068-3070
ISBN: 978-0-7695-3298-1
pp: 47-56
ABSTRACT
The schedulability testing for the deferrable scheduling algorithm for fixed priority transactions (DS-FP) remainsan open problem since its introduction. In this paper, wetake the first step towards investigating necessary and sufficient conditions for the DS-FP schedulability. We propose a necessary and sufficient schedulability condition for the algorithm in discrete time systems, and prove its correctness. Based on this condition, we propose a schedulability test algorithm that is more accurate than the existing test that is only based on a sufficient condition. Our algorithm exploits the fact that there is always a repeating pattern in a DS-FP schedule in discrete time systems. We demonstrate through examples that our schedulability test algorithm outperforms the existing algorithm in terms of accuracy.
INDEX TERMS
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CITATION

D. Chen, S. Han, M. Xiong and A. K. Mok, "A Schedulability Analysis of Deferrable Scheduling Using Patterns," 2008 Euromicro Conference on Real-Time Systems(ECRTS), vol. 00, no. , pp. 47-56, 2008.
doi:10.1109/ECRTS.2008.8
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