The Polling Effect on the Schedulability of Distributed Real-Time Systems

  • Héctor Pérez
  • J. Javier Gutiérrez
  • Michael González Harbour
  • J. Carlos Palencia
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9695)


The usage of polling tasks continues to be quite common in today’s distributed real-time systems, despite the availability of event-driven software mechanisms and response time analysis techniques that can be applied to this kind of systems. This paper proposes a model for polling tasks that allows current response time analysis techniques for event-driven distributed systems to be applied, and it also studies the impact that polling has in the schedulability of a distributed system, using analytic results. A performance evaluation on an Ada-based platform is also provided. As expected, polling produces response times much higher than a pure event-driven alternative. The analysis techniques and the evaluation presented in the paper allows engineers to assess the negative effect of polling on the schedulability of distributed real-time systems.


Distributed systems Real-time Schedulability analysis Embedded systems Polling 


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Héctor Pérez
    • 1
  • J. Javier Gutiérrez
    • 1
  • Michael González Harbour
    • 1
  • J. Carlos Palencia
    • 1
  1. 1.Software Engineering and Real-Time GroupUniversidad de CantabriaSantanderSpain

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