A semi-preemptive priority scheduling discipline: Performance analysis

Joris Walraevens, Tom Maertens and Herwig Bruneel

European Journal of Operational Research, 2013, vol. 224, issue 2, 324-332

Abstract: 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.

Keywords: Priority scheduling; (Non-)preemptive; Performance analysis; Cost function (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:ejores:v:224:y:2013:i:2:p:324-332

DOI: 10.1016/j.ejor.2012.08.008

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