Abstract : In this paper an improvement of the schedulability analysis for fixed-priority distributed hard real-time systems is presented. During the analysis it is not sufficient to include the tasks' worst-case execution time, but also the best-case execution time has to be considered, because the lower bound of the execution has a direct impact on the event densities in the system. The presented approach improves the best-case response time analysis introduced by Redell et al. The paper shows how it is possible to calculate a lower bound for the best-case response time using an expressive event model. This new lower bound of the response time will relax the event densities in a distributed system and will therefore lead to more relaxed worst-case response times.
https://hal.inria.fr/hal-01054478
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Submitted on : Thursday, August 7, 2014 - 11:18:13 AM Last modification on : Thursday, March 5, 2020 - 5:40:47 PM Long-term archiving on: : Wednesday, November 26, 2014 - 1:06:02 AM
Steffen Kollmann, Victor Pollex, Frank Slomka. Global Best-Case Response Time for Improving the Worst-Case Response Times in Distributed Real-Time Systems. 7th IFIP TC 10 Working Conference on Distributed, Parallel and Biologically Inspired Systems (DIPES) / 3rd IFIP TC 10 International Conference on Biologically-Inspired Collaborative Computing (BICC) / Held as Part of World Computer Congress (WCC) , Sep 2010, Brisbane, Australia. pp.157-168, ⟨10.1007/978-3-642-15234-4_16⟩. ⟨hal-01054478⟩