Energy and Performance Efficient Consolidation of Independent VMs in Virtualized Data Center by Exploiting VMs´ Memory Demand Heterogeneity

Virtualization allows server consolidation to reduce energy consumption and agile resource provisioning. Consolidation with unaware of the memory-access demand can cause inefficient resource utilization and degrade system performance. In this paper, we propose efficient consolidation of VMs based on the memory-access demand of these VMs to improve overall system performance. Our approach is reactive and exploits the migration capability. We evaluate our algorithm using several simulation setups and different performance metrics. The results show that we can achieve balance in memory-bus utilization and improve of the system compared to CPU-based consolidation approach.