Fluid-Flow Approximation in the Analysis of Vast Energy-Aware Networks

Monika Nycz, Tomasz Nycz and Tadeusz Czachórski
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Monika Nycz: Department of Computer Networks and Systems, Silesian University of Technology, 44-100 Gliwice, Poland
Tomasz Nycz: Department of Distributed Systems and Informatic Devices, Silesian University of Technology, 44-100 Gliwice, Poland
Tadeusz Czachórski: Institute of Theoretical and Applied Informatics, Polish Academy of Sciences, Bałtycka 5, 44-100 Gliwice, Poland

Mathematics, 2021, vol. 9, issue 24, 1-19

Abstract: The paper addresses two issues: (i) modeling dynamic flows transmitted in vast TCP/IP networks and (ii) modeling the impact of energy-saving algorithms. The approach is based on the fluid-flow approximation, which applies first-order differential equations to analyze the evolution of queues and flows. We demonstrate that the effective implementation of this method overcomes the constraints of storing large data in numerical solutions of transient problems in vast network topologies. The model is implemented and executed directly in a database system. It can analyze transient states in topologies of more than 100,000 nodes, i.e., the size which was not considered until now. We use it to investigate the impact of an energy-saving algorithm on the performance of a vast network. We find that it reduces network congestion and save energy costs but significantly lower network throughput.

Keywords: fluid-flow approximation; computer networks; energy-aware networks; data analysis (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
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