A framework for characterization and analysis of software system scalability

  • Authors:

  • Leticia Duboc;David Rosenblum;Tony Wicks

  • Affiliations:

  • University College London, London, United Kingdom;University College London, London, United Kingdom;Fortent, London, United Kingdom

  • Venue:
  • Proceedings of the the 6th joint meeting of the European software engineering conference and the ACM SIGSOFT symposium on The foundations of software engineering
  • Year:
  • 2007

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Abstract

The term scalability appears frequently in computing literature, but it is a term that is poorly defined and poorly understood. The lack of a clear, consistent and systematic treatment of scalability makes it difficult to evaluate claims of scalability and to compare claims from different sources. This paper presents a framework for precisely characterizing and analyzing the scalability of a software system. The framework treats scalability as a multi-criteria optimization problem and captures the dependency relationships that underlie typical notions of scalability. The paper presents the results of a case study in which the framework and analysis method were applied to a real-world system, demonstrating that it is possible to develop a precise, systematic characterization of scalability and to use the characterization to compare the scalability of alternative system designs.