Performance-aware server consolidation with adjustable interference levels
Luis Carlos Jersak, Tiago Coelho Ferreto · 2016
Virtualization technologies and server consolidation are the main drivers of high resource utilization and energy efficiency in modern Data Centers. However, some combinations of virtual machines into the same server may lead to severe performance degradation. This performance degradation is known as virtual machine interference. In a typical Data Center, different measures of virtual machine interference can be employed, depending on applications importance. Supporting a higher virtual machine interference may result in a higher consolidation, while strict low interference requirements may demand more resources. This paper presents an algorithm for server consolidation that uses an adjustable virtual machine interference threshold to map virtual machines into physical servers, allowing users to get a better trade off between amount of resources and performance according to their needs. Simulation results show that the solution succeeds in maintaining the interference levels below a defined threshold while also providing efficient server consolidation.