A case study of open source software development: the Apache server

  • Authors:

  • Audris Mockus;Roy T. Fielding;James Herbsleb

  • Affiliations:

  • Bell Labs, 263 Shuman Blvd., Naperville, IL;Information & Computer Science, University of California, Irvine, Irvine, CA;Bell Labs, 263 Shuman Blvd., Naperville, IL

  • Venue:
  • Proceedings of the 22nd international conference on Software engineering
  • Year:
  • 2000

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Abstract

According to its proponents, open source style software development has the capacity to compete successfully, and perhaps in many cases displace, traditional commercial development methods. In order to begin investigating such claims, we examine the development process of a major open source application, the Apache web server. By using email archives of source code change history and problem reports we quantify aspects of developer participation, core team size, code ownership, productivity, defect density, and problem resolution interval for this OSS project. This analysis reveals a unique process, which performs well on important measures. We conclude that hybrid forms of development that borrow the most effective techniques from both the OSS and commercial worlds may lead to high performance software processes.