Scalability and performance analysis of the EGEE information system

Grid information systems are mission-critical components in today's production grid infrastructures. They provide detailed information about grid services which is needed for job submission, data management and general monitoring of the grid. As the number of services within these infrastructures continues to grow, it must be understood if the current information system used in EGEE has the capacity to handle the extra load. This paper describes the current usage of the EGEE information system obtained by monitoring the existing system. A test framework is described which simulates the existing usage patterns and can be used to measure the performance of information systems. The framework is then used to conduct tests on the existing EGEE information system components to evaluate various performance enhancements. Finally, the framework is used to simulate the performance of the information system if the existing grid would double in size.