Response time analysis of EDF distributed real-time systems

  • Authors:
  • J. C. Palencia;M. González Harbour

  • Affiliations:
  • Departamento de Electrónica y Computadores, Universidad de Cantabria, 39005-Santander, Spain. E-mail: palencij,mgh@unican.es (Corresponding author);Departamento de Electrónica y Computadores, Universidad de Cantabria, 39005-Santander, Spain. E-mail: palencij,mgh@unican.es

  • Venue:
  • Journal of Embedded Computing - Real-Time Systems (Euromicro RTS-03)
  • Year:
  • 2005

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Abstract

Offset-based response time analysis of tasks scheduled with fixed priorities has demonstrated to be a powerful tool to analyze many task models with different kinds of timing constraints, like regular periodic tasks, suspending tasks, distributed systems, tasks with varying priorities, multiframe models, etc. Offset-based analysis techniques are capable of performing a global schedulability analysis in distributed systems, as opposed to the less efficient techniques that consider each processing or communication resource as independent. In this paper we extend the offset-based schedulability analysis techniques to systems with EDF scheduling, using analytical techniques that are similar to those developed for fixed priority scheduling. With this new analysis, we now have a complete set of techniques to perform the analysis of different task models in distributed heterogeneous systems, i.e., processors and communication networks having either fixed priority or EDF schedulers.