State-of-the-practice in data center virtualization: Toward a better understanding of VM usage
State-of-the-practice in data center virtualization: Toward a better understanding of VM usage
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DOI：
10.1109/dsn.2013.6575350
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
R. Birke;Andrej Podzimek;L. Chen;E. Smirni
中科院分区：
文献类型：
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作者：
R. Birke;Andrej Podzimek;L. Chen;E. Smirni
硬件虚拟化是在不同租户之间共享数据中心的流行方式。在本白皮书中，我们介绍了一项大规模的工作负载特征研究，旨在更好地了解实践状况，即客户如何使用私有云中的数据中心、如何使用虚拟化在不同租户之间共享物理资源以及如何实际使用虚拟化技术。我们的研究重点是一家主要基础设施提供商的所有企业数据中心，这些数据中心的地理位置分散在全球各地，并报告了它们在19天内观察到的使用情况。我们特别关注如何跨不同的物理资源部署虚拟机，重点放在处理器和内存上，重点关注物理资源的资源共享和使用、虚拟机生命周期以及迁移模式和频率。我们的研究表明，存在过度调配资源的巨大趋势，同时对虚拟化(例如迁移和代管)带来的几种可能性持保守态度，显示出旨在降低数据中心运营成本的策略开发的巨大潜力。
Hardware virtualization is the prevalent way to share data centers among different tenants. In this paper we present a large scale workload characterization study that aims to a better understanding of the state-of-the-practice, i.e., how data centers in the private cloud are used by their customers, how physical resources are shared among different tenants using virtualization, and how virtualization technologies are actually employed. Our study focuses on all corporate data centers of a major infrastructure provider that are geographically dispersed across the entire globe and reports on their observed usage across a 19-day period. We especially focus on how virtual machines are deployed across different physical resources with an emphasis on processors and memory, focusing on resource sharing and usage of physical resources, virtual machine life cycles, and migration patterns and frequencies. Our study illustrates that there is a huge tendency in over provisioning resources while being conservative to the several possibilities opened up by virtualization (e.g., migration and co-location), showing tremendous potential for the development of policies aiming to reduce data center operational costs.