Periodic Resource Model for Compositional Real-Time Guarantees

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We address the problem of providing compositional hard real-time guarantees in a hierarchy of schedulers. We first propose a resource model to characterize a periodic resource allocation and present exact schedulability conditions for our proposed resource model under the EDF and RM algorithms. Using the exact schedulability conditions, we then provide methods to abstract the timing requirements that a set of periodic tasks demands under the EDF and RM algorithms as a single periodic task. With these abstraction methods, for a hierarchy of schedulers, we introduce a composition method that derives the timing requirements of a parent scheduler from the timing requirements of its child schedulers in a compositional manner such that the timing requirement of the parent scheduler is satisfied, if and only if, the timing requirements of its child schedulers are satisfied.

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2003-12-03
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Departmental Papers (CIS)
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2023-05-16T21:39:29.000
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Copyright 2003 IEEE. Reprinted from Proceedings of the 24th IEEE Real-Time Systems Symposium (RTSS 2003), pages 2-13. Publisher URL:http://ieeexplore.ieee.org/xpl/tocresult.jsp?isNumber=28040 This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Pennsylvania's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
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