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Directed Acyclic Graph Scheduling for Mixed-Criticality Systems

  • Roberto MedinaEmail author
  • Etienne Borde
  • Laurent Pautet
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10300)

Abstract

Deploying safety-critical systems into constrained embedded platforms is a challenge for developers who must arbitrate between two conflicting objectives: software has to be safe and resources need to be used efficiently. Mixed-criticality (MC) has been proposed to meet a trade-off between these two aspects. Nonetheless, most task models considered in the literature of MC scheduling, do not take into account precedence constraints among tasks. In this paper, we propose a multi-core scheduling approach for a model presenting MC tasks and their dependencies as a Directed Acyclic Graph (DAG). We also introduce an evaluation framework for this model, released as an open source software. Evaluation of our scheduling algorithm provides evidence of the difficulty to find correct scheduling for DAGs of MC tasks. Besides, experimentation results provided in this paper show that our scheduling algorithm outperforms existing algorithms for scheduling DAGs of MC tasks.

Keywords

Mixed-Criticality Directed acyclic graphs Mode transition Real-time scheduling 

Notes

Acknowledgment

This research work has been funded by the academic and research chair Engineering of Complex Systems.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.LTCI, Télécom ParisTechUniversité Paris-SaclayParisFrance

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