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Taking an existing large-scale simulation model of the German toll system we identify the typical workload by profiling the runtime behavior. Crucial performance hot spots are identified and related to the real-world application to analyze and evaluate the observed efficiency. In a benchmark approach we compare the observed performance to different(More)
Simulation models of real-world distributed systems depend both on the accuracy of the underlying model and the interaction between user and system. The user interaction is typically modeled as stochastic process depending on parameters and distributions describing the actual usage. Accurate data is often not available and (manual) assumptions are(More)
—We study the performance issues of a realistic simulation of the German toll system for heavy trucks using a discrete-event system (DES) simulation. The article first introduces the German toll system and the simulation framework developed to analyze the systems' behavior. A number of performance limitations of several commercial and non-commercial DES(More)
Using an existing large-scale realistic discrete event simulation model of a mobile distributed system we model the infrastructure and dependencies of 2G, 3G and 4G mobile data networks. We investigate the effects of the different network generations and of transitioning connections between networks on the typical behaviour of the distributed system. In(More)