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Safety Assurance Driven Problem Formulation for Mixed-Criticality Scheduling

Fulltext:


Authors:

Patrick Graydon, Iain Bate

Research group:

Dependable Software Engineering

Publication Type:

Conference/Workshop Paper

Venue:

1st International Workshop on Mixed Criticality Systems

Abstract

In 2007, Vestal proposed Mixed-Criticality Schedul- ing (MCS) to increase utilisation despite imperfect timing evidence. Others have since refined the MCS problem formulation, proposed alternative scheduling approaches, and evaluated their performance. We assess existing MCS problem formulations from a safety assurance perspective and report problems found. Among these is the use of the word `criticality' to mean several related but distinctly different things such as Safety Integrity Levels (SIL), importance, and confidence. We conclude with suggestions for addressing the problems found.

Bibtex

@inproceedings{Graydon3476,
author = {Patrick Graydon and Iain Bate},
title = {Safety Assurance Driven Problem Formulation for Mixed-Criticality Scheduling},
editor = {Liliana Cucu-Grosjean and Rob Davis},
pages = {19--24},
month = {December},
year = {2013},
booktitle = {1st International Workshop on Mixed Criticality Systems},
url = {http://www.es.mdu.se/publications/3476-}
}