Issues using the Nexus Interface for Measurement-Based WCET Analysis

Authors Adam Betts, Guillem Berant

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Adam Betts
Guillem Berant

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Adam Betts and Guillem Berant. Issues using the Nexus Interface for Measurement-Based WCET Analysis. In 5th International Workshop on Worst-Case Execution Time Analysis (WCET'05). Open Access Series in Informatics (OASIcs), Volume 1, pp. 9-12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)


Hardware debug interfaces such as Nexus have the power to unleash the full potential of measurement-based WCET approaches due to the passive nature in which timing data are collected from the processor. However, difficulties arise as a result of their restrictive nature, thus disallowing true user freedom in the selection of instrumenta- tion point placement. This paper elaborates on the problems encountered when using the Nexus inter- face in our measurement-based WCET framework, and how some of these issues can be resolved, par- ticularly that of irreducibility.
  • Nexus interface
  • Measurememt-Based WCET analysis


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