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Theory and Practice of EDF Scheduling in Distributed Real-Time Systems

  • J. Javier Gutiérrez
  • Héctor Pérez
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10873)

Abstract

The behavior of EDF schedulers has been very extensively studied for single-processor systems and there is also a lot of work on scheduling and schedulability analysis techniques dealing with EDF in homogeneous multiprocessor systems. However, if distributed systems are considered, only a small number of schedulability analysis techniques are available and there is only a little information on practical experience with this kind of systems. For distributed systems where a clock synchronization mechanism is not available, a recent work has theoretically shown how a feasible deadline assignment can significantly increase the utilization of processing resources while keeping the system schedulable (i.e., meeting all the timing requirements). On the other hand, Ada provides support for building applications scheduled by EDF. This paper proposes a set of experiments to contrast the theoretical results on scheduling deadline assignment in a distributed real-time application against those obtained through its real execution.

Keywords

Distributed systems Real-time EDF Schedulability analysis Scheduling deadline assignment Ada applications 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Software Engineering and Real-Time GroupUniversidad de CantabriaSantanderSpain

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