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| Authors: | Kai Lampka, Simon Perathoner, Lothar Thiele |
| Group: | Computer Engineering |
| Type: | Article |
| Title: | Analytic Real-Time Analysis and Timed Automata: A Hybrid Methodology for the Performance Analysis of Embedded Real-Time Systems |
| Year: | 2010 |
| Pub-Key: | LPT10a |
| Journal: | Design Automation for Embedded Systems |
| Volume: | 14 |
| Number: | 3 |
| Pages: | 193-227 |
| Keywords: | MPA, ESD |
| Abstract: | This paper presents a compositional and hybrid approach for the performance analysis of distributed real-time systems. The developed methodology abstracts system components by either flow-oriented and purely analytic descriptions or by state-based models in the form of timed automata. The interaction among the heterogeneous components is modeled by streams of discrete events. In total this yields a hybrid framework for the compositional analysis of embedded systems. It supplements contemporary techniques for the following reasons: (a) state space explosion as intrinsic to formal verification is limited to the level of isolated components; (b) computed performance metrics such as buffer sizes, delays and utilization rates are not overly pessimistic, because coarse-grained analytic models are used only for components that conform to the stateless model of computation. For demonstrating the usefulness of the presented ideas, a corresponding tool-chain has been implemented. It is used to investigate the performance of a two-staged computing system, where one stage exhibits state-dependent behavior that is only coarsely coverable by a purely analytic and stateless component abstraction. Finally, experiments are performed to ascertain the scalability and the accuracy of the proposed approach. |
| Resources: | [BibTeX] [ External LINK ] [Paper as PDF] |
