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Operating System Support for Virtual Machines
A virtual-machine monitor (VMM) is a useful technique for adding functionality below existing operating system and application software. One class of VMMs (called Type II VMMs) builds on the abstractions provided by a host operating system. Type II VMMs are elegant and convenient, but their performance is currently an order of magnitude slower than that achieved when running outside a virtual machine (a standalone system). In this paper, we examine the reasons for this large overhead for Type II VMMs. We find that a few simple extensions to a host operating system can make it a much faster platform for running a VMM. Taking advantage of these extensions reduces virtualization overhead for a Type II VMM to 14-35% overhead, even for workloads that exercise the virtual machine intensively.
author = {Samuel T. King and George W. Dunlap and Peter M. Chen},
title = {Operating System Support for Virtual Machines},
booktitle = {2003 USENIX Annual Technical Conference (USENIX ATC 03)},
year = {2003},
address = {San Antonio, TX},
url = {https://www.usenix.org/conference/2003-usenix-annual-technical-conference/operating-system-support-virtual-machines},
publisher = {USENIX Association},
month = jun
}
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