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Interchange arguments in stochastic scheduling
Published online by Cambridge University Press: 14 July 2016
Abstract
Interchange arguments are applied to establish the optimality of priority list policies in three problems. First, we prove that in a multiclass tandem of two ·/M/1 queues it is always optimal in the second node to serve according to the cµ rule. The result holds more generally if the first node is replaced by a multiclass network consisting of ·/M/1 queues with Bernoulli routing. Next, for scheduling a single server in a multiclass node with feedback, a simplified proof of Klimov's result is given. From it follows the optimality of the index rule among idling policies for general service time distributions, and among pre-emptive policies when the service time distributions are exponential. Lastly, we consider the problem of minimizing the blocking in a communication link with lossy channels and exponential holding times.
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- Copyright © Applied Probability Trust 1989
Footnotes
Work performed while this author was visiting the Systems Research Center, University of Maryland, College Park, supported by the Office of Naval Research through grant number N00014–84-K-0614.
Present address: Computer Science, IBM Thomas J. Watson Research Center, P.O. Box 704, Yorktown Heights, NY 10598, USA.
The work of this author was supported in part by the NSF Engineering Research Centers Program NSFD-CDR-88–03012.
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