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Reusing Real-Time Systems Design Experience Through Modelling Patterns

Electronic Systems. Reusing Real-Time Systems Design Experience Through Modelling Patterns. Oana Florescu 1 , Jeroen Voeten 1,2 , Marcel Verhoef 3 , Henk Corporaal 1 1 Eindhoven University of Technology, 2 Embedded Systems Institute, 3 Chess Information Technology.

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Reusing Real-Time Systems Design Experience Through Modelling Patterns

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  1. ElectronicSystems Reusing Real-Time Systems Design Experience Through Modelling Patterns Oana Florescu1, Jeroen Voeten1,2, Marcel Verhoef3, Henk Corporaal1 1Eindhoven University of Technology, 2Embedded Systems Institute, 3Chess Information Technology Real-Time Systems Modelling SHE methodology: • POOSL – formally defined modelling language • SHESim – interactive model creation and simulation • Rotalumis – fast evaluation of properties • Real-time systems components: • tasks (periodic, aperiodic, ...) • resources (processor, bus, ...) • scheduling (priority, round-robin, ...) • POOSL modelling patterns: • compact, parameterisable templates • “plug-and-play” • easy construction of correct models for design space exploration Models Composition and Analysis Model analysis: • deadlock • schedulability • deadline miss ratio • task jitter • CPU workload => => A Printer Paper-Path An In-Car Navigation System Possible architectures Analyse schedulability and CPU workload End-to-end delay that is to be checked against the requirements Analyse task jitter Conclusions • Modelling patterns allow easy composition and analysis of design space exploration models based on “plug-and-play” • They take into account uncertainties usually left out Research carried out as part of the project.

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