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Response Time Approximations in Fork-Join Queues

Abigail Lebrecht, William J. Knottenbelt

National Workshop Paper
23rd Annual UK Performance Engineering Workshop (UKPEW)
July, 2007

Fork-join queueing networks model a network of parallel servers in which an arriving job splits into a number of subtasks that are serviced in parallel. Fork-join queues can be used to model disk arrays. A response time approximation of the fork-join queue is presented that attempts to comply with the additional constraints of modelling a disk array. This approximation is compared with existing analytical approximations of the fork-join queueing network.

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