Conditional inter-departure times from the M/G/s queue

Authors:
Casper Veeger;Yoav Kerner;Pascal Etman;Ivo Adan
Affiliations:
Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands 5600 MB;Department of Industrial Engineering and Management, Ben Gurion University of the Negev, Beer Sheva, Israel;Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands 5600 MB;Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands 5600 MB and Department of Quantitative Economics, University of Amsterdam, Amsterdam, The Nethe ...
Venue:
Queueing Systems: Theory and Applications
Year:
2011

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Abstract

We study the mean and the distribution of the time elapsing between two consecutive departures from the stationary M/G/s queue given the number of customers left behind by the first departure is equal to n. It is conjectured that if the failure rate of the service time distribution is increasing (decreasing), then (i) the limit of the mean conditional inter-departure time as n tends to infinity is less (greater) than the mean service time divided by the number of servers s, and (ii) the conditional inter-departure times are stochastically decreasing (increasing) in n for all n驴s.