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Mixed Feelings About Mixed Criticality (Invited Paper)

Author Reinhard Wilhelm

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Reinhard Wilhelm
  • Informatik, Universitaet des Saarlandes, Saarland Informatics Campus, Saarbruecken, Germany

Funding

Funding for our research was obtained from Deutsche Forschungsgemeinschaft under Collaborative Research Centers 124 and AVACS and the Project Daedalus in the European 5th Framework Programme.

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Reinhard Wilhelm. Mixed Feelings About Mixed Criticality (Invited Paper). In 18th International Workshop on Worst-Case Execution Time Analysis (WCET 2018). Open Access Series in Informatics (OASIcs), Volume 63, pp. 1:1-1:9, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018) https://doi.org/10.4230/OASIcs.WCET.2018.1

Abstract

I point to some challenges for WCET analysis offered in the transition to integrated mixed-criticality systems (MCSs) and to multi-core platforms, claim that proposed certification standards are inadequate, show that the MCS model heavily used by the scheduling community is fraught, and clarify why the traditional abstract interface between WCET analysis and schedulability analysis is obsolete. 
A central point is the insistence on sound approaches. I give a detailed account of how the most rigid certification procedures, those of the avionics domain, are satisfied, to defend the validity of my claims.

Subject Classification

ACM Subject Classification
  • Software and its engineering → Real-time systems software
Keywords
  • WCET analysis
  • mixed criticality systems
  • multi-core platforms
  • scheduling
  • schedulability

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References

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