On Impact of Dynamic Virtual Machine Reallocation on Data Center Efficiency

Author

Kochut, Andrzej

Author_Institution

IBM T.J. Watson Res. Center, Hawthorne, NY

fYear

2008

fDate

8-10 Sept. 2008

Firstpage

1

Lastpage

8

Abstract

Modern OS virtualization technology allows for "live migration" of virtual servers between physical hosts after the initial consolidation thus providing new avenues for performance optimization. This paper focuses on quantifying by how much data center efficiency can be improved using dynamic (i.e., in response to demand changes) real-location of virtual machines between physical servers. An analytical performance model of dynamic virtual machine reallocation is presented. It allows to estimate the reduction (as compared to the static consolidation) in the number of physical servers required to host the workload (under the same requirements of the maximum number of capacity overloads). Model is validated using simulations and several insights based on the analysis are provided.

Keywords

computer centres; operating systems (computers); resource allocation; virtual machines; OS virtualization technology; data center efficiency; dynamic virtual machine reallocation; live migration process; performance optimization; virtual server; workload balancing; Analytical models; Autocorrelation; Costs; Frequency; Operating systems; Optimization; Performance analysis; Virtual machining; Virtual manufacturing; Voice mail;

fLanguage

English

Publisher

ieee

Conference_Titel

Modeling, Analysis and Simulation of Computers and Telecommunication Systems, 2008. MASCOTS 2008. IEEE International Symposium on

Conference_Location

Baltimore, MD

ISSN

1526-7539

Print_ISBN

978-1-4244-2817-5

Electronic_ISBN

1526-7539

Type

conf

DOI

10.1109/MASCOT.2008.4770571

Filename

4770571