Vanguard
Yannis Sfakianakis, Stelios Mavridis, Anastasios Papagiannis, Spyridon N. Papageorgiou, Markos Fountoulakis, Manolis Marazakis, Angelos Bilas · 2014
Server consolidation via virtualization is an essential technique for improving infrastructure cost in modern datacenters. From the viewpoint of datacenter operators, consolidation offers compelling advantages by reducing the number of physical servers, and reducing operational costs such as energy consumption. However, performance interference between co-located workloads can be crippling. Conservatively, and at significant cost, datacenter operators are forced to keep physical servers at low utilization levels (typically below 20%), to minimize adverse performance interactions.