Query Performance Analysis Tool for Distributed Systems

The increasing demands for fast interactive response times make query performance one of the central problems of Distributed Systems. A sophisticated design is necessary to ensure high performance of Distributed Systems. Software Performance Engineering (SPE) is an approach that builds and solves quantitative performance models to assess the performance of the system early in the software development lifecycle. The most common and popular approach for solving the performance models developed is to use simulation. Simulation is a powerful tool for modeling and analysis of complex Distributed Systems where obtaining a closed-form analytical solution is extremely difficult. Simulation modeling is used extensively in industry for alternative system architectures. If the performance of a Distributed System is determined to be unacceptable at the time of “acceptance testing”, it can result in very expensive redesign, delayed delivery or, in the worst case, complete non-use of the system. Accordingly, we have developed a simulation tool, Distributed System Performance Analysis Tool (DSPAT), to support Software Performance Engineering concept of estimating and analyzing the performance in the early design phases of Distributed Systems development.