License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ECRTS.2022.9
URN: urn:nbn:de:0030-drops-163267
URL: https://drops.dagstuhl.de/opus/volltexte/2022/16326/
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Meunier, RĂ©mi ; Carle, Thomas ; Monteil, Thierry

Correctness and Efficiency Criteria for the Multi-Phase Task Model

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LIPIcs-ECRTS-2022-9.pdf (1 MB)


Abstract

This paper investigates how the multi-phase representation of real-time tasks impacts their implementation and the precision of the interference analysis in a multi-core context. In classical scheduling and interference analyses, tasks are represented as a single phase with a duration equal to their Worst-Case Execution Time (WCET) in isolation, annotated with their worst-case number of accesses. We propose a general formal definition of a task model in which tasks are represented as a sequence of such phases: the multi-phase model. We then provide a set of general correction criteria for the implementation of tasks represented in the multi-phase model, which is agnostic of the analysis method applied on the tasks. We also use the multi-phase model on an avionics case-study and study its impact on the interference analysis. Finally, we define a set of efficiency criteria using a statistical study of the most efficient multi-phase shapes.

BibTeX - Entry

@InProceedings{meunier_et_al:LIPIcs.ECRTS.2022.9,
  author =	{Meunier, R\'{e}mi and Carle, Thomas and Monteil, Thierry},
  title =	{{Correctness and Efficiency Criteria for the Multi-Phase Task Model}},
  booktitle =	{34th Euromicro Conference on Real-Time Systems (ECRTS 2022)},
  pages =	{9:1--9:21},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-239-6},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{231},
  editor =	{Maggio, Martina},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/opus/volltexte/2022/16326},
  URN =		{urn:nbn:de:0030-drops-163267},
  doi =		{10.4230/LIPIcs.ECRTS.2022.9},
  annote =	{Keywords: Task model, Interference, Multicore architectures}
}

Keywords: Task model, Interference, Multicore architectures
Collection: 34th Euromicro Conference on Real-Time Systems (ECRTS 2022)
Issue Date: 2022
Date of publication: 28.06.2022


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