Hostname: page-component-74656f9884-2dmjx Total loading time: 0 Render date: 2026-11-09T22:25:48.478Z Has data issue: false hasContentIssue false

Response times in M/M/s fork-join networks

Published online by Cambridge University Press:  01 July 2016

Sung-Seok Ko*
Affiliation:
Samsung SDS
Richard F. Serfozo*
Affiliation:
Georgia Institute of Technology
*
∗ Postal address: Samsung SDS Co. Ltd, 707-719 Yoksam-2 Dong, Kangnam-Gu, Seoul, Korea 135-918. Email address: sungseok@hotmail.com
∗∗ Postal address: School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. Email address: rserfozo@isye.gatech.edu

Abstract

We study a fork-join processing network in which jobs arrive according to a Poisson process and each job splits into m tasks, which are simultaneously assigned to m nodes that operate like M/M/s queueing systems. When all of its tasks are finished, the job is completed. The main result is a closed-form formula for approximating the distribution of the network's response time (the time to complete a job) in equilibrium. We also present an analogous approximation for the distribution of the equilibrium queue length (the number of jobs in the system), when each node has one server. Kolmogorov-Smirnov statistical tests show that these formulae are good fits for the distributions obtained from simulations.

Information

Type
General Applied Probability
Copyright
Copyright © Applied Probability Trust 2004 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable