Virtio network paravirtualization driver: Implementation and performance of a de-facto standard |
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Authors: | Gal MotikaAuthor VitaeShlomo WeissAuthor Vitae |
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Affiliation: | Dept. of Electrical Engineering-Systems, Tel Aviv University, Tel Aviv 69978, Israel |
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Abstract: | One of the techniques used to improve I/O performance of virtual machines is paravirtualization. Paravirtualized devices are intended to reduce the performance overhead on full virtualization where all hardware devices are emulated. The interface of a paravirtualized device is not identical to that of the underlying hardware. The OS of the virtual guest machine must be ported in order to use a paravirtualized device. In this paper, the network virtualization done by the Kernel-based Virtual Machine (KVM) is described. The KVM model is different from other Virtual Machines Monitors (VMMs) because the KVM is a Linux kernel model and it depends on hardware support. In this work, the overhead of using such virtual networks is been measured. A paravirtualized model by using the virtio 38] network driver is described, and some performance results of web benchmark on the two models are presented. |
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Keywords: | Operating systems Virtual machines Virtualization Drivers Kernel-based virtual machine |
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