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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Partially Synchronizing Periodic Flows with Offsets Improves Worst-Case End-to-End Delay Analysis of Switched Ethernet
verfasst von : Xiaoting Li, Jean-Luc Scharbarg, Christian Fraboul
Erschienen in: Leveraging Applications of Formal Methods, Verification, and Validation
Verlag: Springer Berlin Heidelberg
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A switched Ethernet network needs a worst-case delay analysis to prove that real-time applications can be correctly implemented on it. Existing approaches for upper bounding end-to-end delay assume that there is either no-synchronization or a global synchronization of flows which needs a global clock. Conversely, flows emitted by the same end-system can be easily synchronized using the existing local clock. This paper explains how the partial synchronization of periodic flows can be integrated in the worst-case delay analysis provided by Network Calculus approach. End-to-end delays computed on switched Ethernet configurations show that the proposed method clearly reduces the upper bounds of end-to-end delay.