A semi-preemptive priority scheduling discipline: Performance analysis
In this paper, we present an in-depth analytical study of a semi-preemptive priority scheduling discipline. This discipline eliminates the deficits of both the full- and non-preemptive versions. Under the non-preemptive category, in particular, higher-priority customers may have to wait even when the service of a lower-priority customer has just started, while under the full-preemptive discipline, the almost completed service of a lower-priority customer may be interrupted due to the arrival of higher-priority customers, possibly causing a large extra delay. For fixed low-priority service times, the semi-preemptive priority scheduling discipline shows a performance gain of up to 6% compared to the full- and non-preemptive versions.
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- Zeephongsekul, P. & Bedford, A., 2006. "Waiting time analysis of the multiple priority dual queue with a preemptive priority service discipline," European Journal of Operational Research, Elsevier, vol. 172(3), pages 886-908, August.
- Ndreca, Sokol & Scoppola, Benedetto, 2008. "Discrete time GI/Geom/1 queueing system with priority," European Journal of Operational Research, Elsevier, vol. 189(3), pages 1403-1408, September.
- Walraevens, Joris & Steyaert, Bart & Bruneel, Herwig, 2008. "Analysis of a discrete-time preemptive resume priority buffer," European Journal of Operational Research, Elsevier, vol. 186(1), pages 182-201, April.
- Feng, Wei & Umemura, Masataka, 2009. "Analysis of a finite buffer model with two servers and two nonpreemptive priority classes," European Journal of Operational Research, Elsevier, vol. 192(1), pages 151-172, January.
- Kim, Kilhwan & Chae, Kyung C., 2010. "Discrete-time queues with discretionary priorities," European Journal of Operational Research, Elsevier, vol. 200(2), pages 473-485, January.
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