Understanding the Linux Kernel, 2nd Edition
Understanding the Linux Kernel, 2nd Edition
OCA: Oracle 10g Administration I Study Guide (1Z0-042)
OCA: Oracle 10g Administration I Study Guide (1Z0-042)
Live migration of virtual machines
NSDI'05 Proceedings of the 2nd conference on Symposium on Networked Systems Design & Implementation - Volume 2
Adaptive control of virtualized resources in utility computing environments
Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems 2007
Operating System Concepts
Enforcing performance isolation across virtual machines in Xen
Proceedings of the ACM/IFIP/USENIX 2006 International Conference on Middleware
Database Virtualization: A New Frontier for Database Tuning and Physical Design
ICDEW '07 Proceedings of the 2007 IEEE 23rd International Conference on Data Engineering Workshop
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Virtualization becomes a very common solution in enterprise and small systems. Therefore, virtualization decreases financial costs and decreases system administration efforts. Also virtualization has been proven to be one of the most efficient approaches to implementing highly available systems. One of the most common software systems deployed in virtualized environments is Database Systems. The key reasons behind these migrations are the great flexibility regarding database administration tasks and also the high availability that virtualized systems offer, which is a very critical factor for some database systems, so it is important to understand the cost of migration from a conventional environment to a virtualized one. In this paper we present an experimental study of the overhead of DBMS migration from a conventional environment to a virtualized one, we use TPC-H Benchmark to calculate this overhead. We show that the average overhead can be around 7% for normal DBMS operations and 97% for fetching data directly from the external disks and we also present details of the different causes of this overhead. Our study shows that for normal DBMS operations the benefits of virtualization come at an acceptable cost.