Mixed-Criticality Scheduling of Sporadic Task Systems

Sanjoy Baruah 1 Vincenzo Bonifaci 2 Gianlorenzo D'Angelo 3, 4 Alberto Marchetti-Spaccamela 5 Suzanne Ster 6 Leen Stougie 7
1 Department of Computer Science [Chapel Hill]
2 MPII - Max Planck Institut für Informatik
3 UNIVAQ - University of L'Aquila [Italy]
4 MASCOTTE - Algorithms, simulation, combinatorics and optimization for telecommunications
CRISAM - Inria Sophia Antipolis - Méditerranée , COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
5 DIS - Dipartimento di Informatica e Sistemistica "Antonio Ruberti"
6 VU - Vrije Universiteit Amsterdam [Amsterdam]
7 Department of mathematics and computing science [Eindhoven]
Abstract : We consider the scheduling of mixed-criticality task systems, that is, systems where each task to be scheduled has multiple levels of worst-case execution time estimates. We design a scheduling algorithm, EDF-VD, whose effectiveness we analyze using the processor speedup metric: we show that any 2-level task system that is schedulable on a unit-speed processor is correctly scheduled by EDF-VD using speed φ; here φ < 1.619 is the golden ratio. We also show how to generalize the algorithm to K > 2 criticality levels.We finally consider 2-level instances on m identical machines. We prove speedup bounds for scheduling an independent collection of jobs and for the partitioned scheduling of a 2-level task system.
Type de document :
Communication dans un congrès
Camil Demetrescu and Magnús M. Halldórsson. 19th Annual European Symposium on Algorithms (ESA 2011), Sep 2011, Saarbruecken, Germany. Springer, 6942, pp.555-566, 2011, Lecture Notes in Computer Science; Algorithms - ESA 2011. <10.1007/978-3-642-23719-5_47>
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Contributeur : Gianlorenzo D'Angelo <>
Soumis le : mercredi 23 novembre 2011 - 13:55:30
Dernière modification le : mardi 22 mai 2012 - 14:32:33
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Sanjoy Baruah, Vincenzo Bonifaci, Gianlorenzo D'Angelo, Alberto Marchetti-Spaccamela, Suzanne Ster, et al.. Mixed-Criticality Scheduling of Sporadic Task Systems. Camil Demetrescu and Magnús M. Halldórsson. 19th Annual European Symposium on Algorithms (ESA 2011), Sep 2011, Saarbruecken, Germany. Springer, 6942, pp.555-566, 2011, Lecture Notes in Computer Science; Algorithms - ESA 2011. <10.1007/978-3-642-23719-5_47>. <hal-00643987>

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