Diffusion Model of Preemptive-Resume Priority Systems and Its Application to Performance Evaluation of SDN Switches.

TytułDiffusion Model of Preemptive-Resume Priority Systems and Its Application to Performance Evaluation of SDN Switches.
Publication TypeJournal Article
Rok publikacji2021
AutorzyNycz T, Czachórski T, Nycz M
JournalSensors
Volume21
Issue5042
Start Page1
Date Published07/2021
Słowa kluczowediffusion approximation; transient states; SDN; priority queues
Abstract

The increasing use of Software-Defined Networks brings the need for their performance analysis and detailed analytical and numerical models of them. The primary element of such research is a model of a SDN switch. This model should take into account non-Poisson traffic and general distributions of service times. Because of frequent changes in SDN flows, it should also analyze transient states of the queues. The method of diffusion approximation can meet these requirements. We present here a diffusion approximation of priority queues and apply it to build a more detailed model of SDN switch where packets returned by the central controller have higher priority than other packets.

DOI10.3390/s21155042

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