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Comparing Routing Policies

Overview

This example shows to compare routing policies. The model contains three similar queuing systems in parallel, each with a different routing policy.

Structure

This model compares the queuing system under three routing policies given below:

  • Shortest Queue: Each entity advances to the shortest queue

  • Probabilistic: Each entity is randomly routed to a queue

  • Round robin: Entities alternate between the two queues

Results And Displays

The plot compares the average system time (end-to-end delay) to show the optimality of the Shortest Queue policy when all service time distributions are exponential. If this assumption is violated, a Shortest Queue policy is not necessarily optimal.

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