%0 Book Section %A Clark, Allan %A Gilmore, Stephen %A Hillston, Jane %A Tribastone, Mirco %B Formal Methods for Performance Evaluation %D 2007 %F eprints:2595 %I Springer %N 4486 %P 132-179 %S Lecture Notes in Computer Science %T Stochastic process algebras %U http://eprints.imtlucca.it/2595/ %X In this tutorial we give an introduction to stochastic process algebras and their use in performance modelling, with a focus on the PEPA formalism. A brief introduction is given to the motivations for extending classical process algebra with stochastic times and probabilistic choice. We then present an introduction to the modelling capabilities of the formalism and the tools available to support Markovian based analysis. The chapter is illustrated throughout by small examples, demonstrating the use of the formalism and the tools. %Z 7th International School on Formal Methods for the Design of Computer, Communication, and Software Systems, SFM 2007, Bertinoro, Italy, May 28-June 2, 2007, Advanced Lectures