Approximating pre-emptive priority dispatching in a multiprogramming model

  • Authors:
  • H. A. Anderson

  • Affiliations:
  • IBM Thomas J. Watson Research Center, Yorktown Heights, New York

  • Venue:
  • IBM Journal of Research and Development
  • Year:
  • 1973

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Abstract

The formulation of the closed queuing network model of a multiprogramming computer system is generalized to allow each task to have its own set of facility service rates and I/O device selection probability distribution. In the model, processor sharing is assumed for different types of customers. It is shown through a series of investigations that the model reasonably approximates preemptive priority dispatching.