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Vol: 53(67) No: 3 / September 2008 Improving Distributed Systems Design by Simulation-Based Performance Analysis. A Case Study. Cosmina Chise Department of Computer Science and Engineering, “Politehnica” University of Timisoara, Faculty of Automation and Computers, 2 V. Parvan Blvd, Timişoara, Romania, e-mail: cosmina.chise@cs.upt.ro Ioan Jurca Department of Computer Science and Engineering, “Politehnica” University of Timisoara, Faculty of Automation and Computers, 2 V. Parvan Blvd, Timisoara, Romania, e-mail: ioan.jurca@cs.upt.ro Keywords: distributed systems, performance, UML, automation, design improvement, air traffic control. Abstract This paper shows how performance analysis results can be used to decide among design alternatives during the development of software systems. This is particularly important in case of distributed systems, which might be unusable if certain performance flaws are detected when they are deployed; usually, at the time of deployment, it is too late or too costly to consider re-designing the system. That’s why the appropriate moment to evaluate performance is at design time, when mistakes can still be fixed and lead to reasonable costs. Performance prediction techniques are applied on system models, since the real system does not exist yet. Among analytical and simulation models, simulation ones are preferred because they can be applied even for complex systems. Performance analysis tools are used to speed-up the process and also to exonerate the developers from the need to master performance analysis techniques. References [1] L.B. Arief and N.A. Speirs, “A UML tool for an automatic generation of simulation programs”, in Proc. of the 2nd Int. Workshop on Software Performance (WOSP2000), pp.71-76 , September 2000. [2] A. Deshpande, V. Apte, and S. Marathe, “PerfCenter: A Performance Modeling Tool for Application Hosting Centers”, in Proc. of Workshop on Software Performance (WOSP’08), Princeton, New Jersey, USA, June 2008. [3] F. Duarte, W. Hasling, W. Sherman, D. Paulish, R. Leao, E. Silva, and V. Cortellessa, “Extending model transformation in the performance domain with a node modeling library”, in Proc. of Workshop on Software Performance (WOSP’08), Princeton, New Jersey, USA, June 2008 [4] A. Hennig, A. Hentschel, and J. Tyack, “Performance prototyping - generating and simulating a distributed IT-system from UML models”, in Proc. of ESM’03, the 17th European Simulation Multiconference, Nottingham, UK, June 2003. [5] A. Hennig, D. Revill, and M. Ponitsch, “From UML to performance measures – simulative performance predictions of IT-systems using the JBoss application server with OMNET++”, in Proc. of ESM’03, the 17th European Simulation Multiconference, Nottingham, UK, June 2003. [6] M. Marzolla, “Simulation-Based Performance Modeling of UML Software Architectures”, Ph. D. Thesis, Dipartimento di Informatica, Universit`a Ca’ Foscari di Venezia, Italy, February 2004. [7] M. Marzolla and S. Balsamo, “UML-PSI: The UML Performance Simulator”, in Proc. of the 1st Int. Conf. on Quantitative Evaluation of Systems (QEST 2004), pp. 340-341, Enschede, The Netherlands, September 2004. [8] M. De Miguel, T. Lambolais, M. Hannouz, S. Betgè-Brezetz, and S. Piekarec, “UML extensions for the specification and evaluation of latency constraints in architectural models”, in Proc. of the 2nd Int. Workshop on Software Performance (WOSP2000), pp. 83-88, September 2000. [9] M. Tribastone, and S. Gilmore, “Automatic extraction of PEPA performance models from UML activity diagrams annotated with the MARTE profile”, in Proc. of Workshop on Software Performance (WOSP’08), Princeton, New Jersey, USA, June 2008. [10] The Object Management Group, A UML Profile for Schedulability, Performance and Time Specification, Internet, January 2005 (available at http://www.omg.org/technology/documents/profile_catalog.htm). [11] The Object Management Group, A UML Profile for MARTE, Beta 1, Internet, August 2007 (available at http://www.omg.org/technology/documents/profile_catalog.htm). [12] The Object Management Group, OMG MARTE Tools, Internet, http://www.omgmarte.org/Tools.htm [13] Papyrus UML tool, Internet, http://www.papyrusuml.org/ |