In recent years, a range of performance evaluation methodologies and tools has been developed within disparate research communities for the purposes of evaluation, design, and model reduction. The aim of the Performance Evaluation Methodologies and Tools conference is to build bridges between these communities, bringing theory and practice together in order to:compare and debate the complete range of performance evaluation methodologies and their implementation into tools;promote interdisciplinary flow of technical information among industry systems designers and researchers.Conference Topics and Application AreasPerformance evaluation techniques will draw from the following:Advanced simulation tools: simulation of rare events, parallel/distributed simulations, variance reduction techniques, large deviationsStochastic processes: stochastic geometry, long-range dependence, self-similarity, point processes, traffic models and measurementsDiscrete event systems: petri nets, max-plus algebraQueueing theory: network calculus, analytical models, approximation methods, (in)sensitivity, dynamic fluid models, diffusion models, Dam processes, perturbation approaches, control of queuesEnvisaged applications are drawn from, but are not restricted to, the following areas:NetworkingComputer SystemsCommunication SystemsDistributed SystemsRoad TrafficCall CentersOptimization (including game theory and convex optimization)Graph Theory (including random graphs)Interdisciplinary Methodologies (economic, biological and social models)Join us in Pisa for VALUETOOLS 2009!