Transient behavior of the Halfin-Whitt diffusion
We consider the heavy-traffic approximation to the GI/M/s queueing system in the Halfin-Whitt regime, where both the number of servers s and the arrival rate [lambda] grow large (taking the service rate as unity), with and [beta] some constant. In this asymptotic regime, the queue length process can be approximated by a diffusion process that behaves like a Brownian motion with drift above zero and like an Ornstein-Uhlenbeck process below zero. We analyze the transient behavior of this hybrid diffusion process, including the transient density, approach to equilibrium, and spectral properties. The transient behavior is shown to depend on whether [beta] is smaller or larger than the critical value [beta]*[approximate]1.85722, which confirms the recent result of Gamarnik and Goldberg (2008) .
Volume (Year): 121 (2011)
Issue (Month): 7 (July)
|Contact details of provider:|| Web page: http://www.elsevier.com/wps/find/journaldescription.cws_home/505572/description#description|
|Order Information:|| Postal: http://http://www.elsevier.com/wps/find/supportfaq.cws_home/regional|
When requesting a correction, please mention this item's handle: RePEc:eee:spapps:v:121:y:2011:i:7:p:1524-1545. See general information about how to correct material in RePEc.
If references are entirely missing, you can add them using this form.