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Per Processor Spin-Based Protocols for Multiprocessor Real-Time Systems

Authors Sara Afshar, Moris Behnam, Reinder J. Bril, Thomas Nolte

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ACM Subject Classification
  • Computer systems organization → Real-time systems
  • Software and its engineering → Multiprocessing / multiprogramming / multitasking
  • Software and its engineering → Real-time schedulability
Keywords
  • Resource sharing
  • Real-time systems
  • Multiprocessors
  • Spin-locks

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Abstract

This paper investigates preemptive spin-based global resource sharing protocols for resource-constrained real-time embedded multi-core systems based on partitioned fixed-priority preemptive scheduling. We present preemptive spin-based protocols that feature (i) an increased schedulability ratio of task sets and reduced response jitter of tasks compared to the classical non-preemptive spin-based protocol, (ii) similar memory requirements for the administration of waiting tasks as for the non-preemptive protocol whilst only causing (iii) a minimal increase of the minimal number of required stacks per core from one to at most two, and (iv) strong progress guarantees to tasks. We complement these protocols with a unified worst-case response time analysis that specializes to the classical analysis for the non-preemptive protocol. The paper includes a comparative evaluation of the preemptive protocols and the non-preemptive protocol based on synthetic data.

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Sara Afshar, Moris Behnam, Reinder J. Bril, and Thomas Nolte. Per Processor Spin-Based Protocols for Multiprocessor Real-Time Systems. In LITES, Volume 4, Issue 2 (2017). Leibniz Transactions on Embedded Systems, Volume 4, Issue 2, pp. 03:1-03:30, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018) https://doi.org/10.4230/LITES-v004-i002-a003

Author Details

Sara Afshar
  • Mälardalen University
Moris Behnam
  • Mälardalen University
Reinder J. Bril
  • Technische Universiteit Eindhoven
Thomas Nolte
  • Mälardalen University

References

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