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A Definition and Classification of Timing Anomalies

Authors Jan Reineke, Björn Wachter, Stefan Thesing, Reinhard Wilhelm, Ilia Polian, Jochen Eisinger, Bernd Becker



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Jan Reineke
Björn Wachter
Stefan Thesing
Reinhard Wilhelm
Ilia Polian
Jochen Eisinger
Bernd Becker

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Jan Reineke, Björn Wachter, Stefan Thesing, Reinhard Wilhelm, Ilia Polian, Jochen Eisinger, and Bernd Becker. A Definition and Classification of Timing Anomalies. In 6th International Workshop on Worst-Case Execution Time Analysis (WCET'06). Open Access Series in Informatics (OASIcs), Volume 4, pp. 1-6, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2006)
https://doi.org/10.4230/OASIcs.WCET.2006.671

Abstract

Timing Anomalies are characterized by counterintuitive timing behaviour. A locally faster execution leads to an increase of the execution time of the whole program. The presence of such behaviour makes WCET analysis more difficult: It is not safe to assume local worst-case behaviour wherever the analysis encounters uncertainty. Existing definitions of Timing Anomalies are rather imprecise and intuitive in nature. Some do not cover all kinds of known Timing Anomalies. After giving an overview of related work, we give a concise formal definition of Timing Anomalies. We then begin to identify different classes of anomalies. One of these classes, coined Scheduling Timing Anomalies, coincides with previous restricted definitions.
Keywords
  • Timing analysis
  • Worst-case execution time
  • Timing anomalies
  • Scheduling Anomalies
  • Abstraction

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