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Title	Dynamic Load Balancing of Virtual Operating Systems
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Type	Thesis
Length	143 Pages
Area	Computer Science
Advisor	James D. Teresco
Composed	2005
Summary	Modern computer hardware is capable of supporting virtualization as a means of over- coming the restrictions of physical machines. Operating system virtualization has gained popularity in the past several years as a solution to resource under-utilization in so-called “server farm” environments. This technique provides a virtual hardware interface on top of which can run popular operating systems. The Xen Virtual Machine Monitor is an im- plementation of operating system virtualization that supports migration, the act of moving a virtual operating system from one physical machine to another. We have utilized this capability to implement a load balancing daemon in Python that attempts to equalize the load on all nodes in a group of machines running Xen. In addition, we have implemented a simulator for testing balancing algorithms. Experiments using these tools have suggested a number of conclusions about the future of virtual operating system load balancing.