Extending the Palladio Component Model to Analyze Data Contention for Modernizing Transactional Software Towards Service-Orientation

Abstract

The performance of data-intensive software, such as most enterprise software, is determined by two types of contention: The contention for physical resources, and the contention for data accessed within transactions. When modernizing existing software towards service-orientation, especially the latter type of contention may increase significantly due to access restructuring. To ensure acceptable performance of the modernized application, an in-advance analysis of the expected performance is required. However, most designoriented performance models do not provide appropriate means for modeling data contention. In this paper, we propose an extension to the Palladio Component Model, called PCM.TX, which enables the analysis of performance effects due to data contention.