Throughout the successive generations of information technology, the performance evaluation of software, computer architectures, and computer networks remains an important issue. In this book, top academic and industrial experts on system performance evaluation and its applications review the major issues now faced in this area. In a series of structured and focused chapters, they present advances in performance methodologies and applications. They address developments in analytical modeling and its interaction with detailed analysis of measurement data. They also discuss performance evaluation methodologies for large-scale software systems both in general and in the context of critical application such as nuclear reactor control and air transportation systems.