Unfairness Metrics for Space-Sharing Parallel Job Schedulers

  • Gerald Sabin
  • P. Sadayappan
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3834)


Sociology, computer networking and operations research provide evidence of the importance of fairness in queuing disciplines. Currently, there is no accepted model for characterizing fairness in parallel job scheduling. We introduce two fairness metrics intended for parallel job schedulers, both of which are based on models from sociology, networking, and operations research. The first metric is motivated by social justice and attempts to measure deviation from arrival order, which is perceived as fair by the end user. The second metric is based on resource equality and compares the resources consumed by a job with the resources deserved by the job. Both of these metrics are orthogonal to traditional metrics, such as turnaround time and utilization.

The proposed fairness metrics are used to measure the unfairness for some typical scheduling policies via simulation studies. We analyze the fairness of these scheduling policies using both metrics, identifying similarities and differences.


Social Justice Schedule Policy Arrival Order Resource Equality First Come First Serve 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Gerald Sabin
    • 1
  • P. Sadayappan
    • 1
  1. 1.The Ohio State UniversityColumbusUSA

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