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

Sensors

Monika Nycz¹  Tomasz Nycz²  Tadeusz Czachórski³ 

[1] Department of Computer Networks and Systems, Silesian University of Technology, 44-100 Gliwice, Poland;Department of Distributed Systems and Informatic Devices, Silesian University of Technology, 44-100 Gliwice, Poland;Institute of Theoretical and Applied Informatics, Polish Academy of Sciences, Bałtycka 5, 44-100 Gliwice, Poland;

关键词: diffusion approximation;    transient states;    SDN;    priority queues;   

DOI  :  10.3390/s21155042

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown