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Issues using the Nexus Interface for Measurement-Based WCET Analysis Betts, Adam Berant, Guillem Nexus interface Measurememt-Based WCET analysis 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. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Adam Betts and Guillem Berant 2007 Is Part Of OASIcs, Volume 1, 5th International Workshop on Worst-Case Execution Time Analysis (WCET'05) (2007) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/OASIcs.WCET.2005.807 urn:nbn:de:0030-drops-8076 https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.WCET.2005.807 eng https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode