Improved SIRAP analysis for synchronization in hierarchical scheduled real-time systems

M. Behnam, R.J. Bril, T. Nolte

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Abstract

We present our ongoing work on synchronization in hierarchical scheduled real-time systems, where tasks are scheduled using fixed-priority pre-emptive scheduling. In this paper, we show that the original local schedulability analysis of the synchronization protocol SIRAP [4] is very pessimistic when tasks of a subsystem access many global shared resources. The analysis therefore suggests that a subsystem requires more CPU resources than necessary. A new way to perform the schedulability analysis is presented which can make the SIRAP protocol more efficient in terms of calculated CPU resource needs.
Original languageEnglish
Title of host publicationProceedings 14th IEEE Conference on Emerging Technologies & Factory Automation (ETFA 2009, Palma de Mallorca, Spain, September 22-25, 2009)
PublisherInstitute of Electrical and Electronics Engineers
Pages1-4
ISBN (Print)978-1-4244-2727-7
DOIs
Publication statusPublished - 2009

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    Behnam, M., Bril, R. J., & Nolte, T. (2009). Improved SIRAP analysis for synchronization in hierarchical scheduled real-time systems. In Proceedings 14th IEEE Conference on Emerging Technologies & Factory Automation (ETFA 2009, Palma de Mallorca, Spain, September 22-25, 2009) (pp. 1-4). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ETFA.2009.5347234