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Virtualization is mainly employed for increasing the utilization of a lightly-loaded system by consolidation, but also to ease the administration based on the possibility to rapidly provision or migrate virtual machines. These facilities are crucial for efficiently managing large data centers. At the same time, modern hardware - such as Intel's Nehalem microarchitecure - change critical assumptions about performance bottlenecks and software systems explicitly exploiting the underlying hardware - such as main memory databases - gain increasing momentum. In this paper, the authors address the question of how these specialized software systems perform in a virtualized environment.
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