Closed source versus open source in a model of software bug dynamics

Details Closed source versus open source in a model of software bug dynamics Closed source versus open source in a model of software bug dynamics

2003-06-19

arxiv.org/abs/cond-mat/0306511v5

Physics

Condensed Matter

Statistical Mechanics

13 pages, 8 figures. Better introduction of the model. New section of analytical results. Added a discussion on how to fit the

Scientific paper

We introduce a simple microscopic description of software bug dynamics where users, programmers and a maintainer interact through a given program, with a particular emphasis on bug creation, detection and fixing. When the program is written from scratch, the first phase of development is characterized by a fast decline of the number of bugs, followed by a slow phase where most bugs have been fixed, hence, are hard to find. Releasing immediately bug fixes speeds up the debugging process, which substantiates bazaar open-source methodology. We provide a mathematical analysis that supports our numerical simulations. Finally, we apply our model to Linux history and determine the existence of a lower bound to the quality of its programmers.

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