Evaluation des performances réseau dans le contexte de la virtualisation XEN

Abstract : Virtualization technics of the Operating System improve security, isolation,reliability and flexibility of the environments. These technics become a must inlarge scale distributed system and begin to be used in data transport networks.However, virtualization introduced an overhead which must be integrated tovirtualized system performance models in order to forecast their behavior. Inthis article, we analyse this overhead and give an experimental evaluation of thevirtualization impact with XEN over the network performance in high speednetwork context. We show that the throughput reached with TCP is barelyaffected by the virtulization at the expense of a growing CPU consumption.Moreover, we study the conflicts between protocol process and standard processto access CPU resources. Finally, we show the impact of the TCP’s congestionwindow size in case of several virtual machines running.
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Pascale Primet, Olivier Mornard, Jean-Patrick Gelas. Evaluation des performances réseau dans le contexte de la virtualisation XEN. [Rapport de recherche] LIP RR-2008-01, Laboratoire de l'informatique du parallélisme. 2007, 2+12p. ⟨hal-02102656⟩

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