Performance Evaluation of Hypervisors and the Effect of Virtual CPU on Performance
Hafiz ur Rahman, Guojun Wang, Jianer Chen, Hai Jiang · 2018
Organizations are adopting virtualization technology to reduce the cost while maximizing the productivity, flexibility, responsiveness, and efficiency. There are a variety of vendors for the virtualization environments, all of them claim that their virtualization hypervisor is the best in terms of performance. Furthermore, when a system administrator or a researcher want to deploy a virtual machine in a cloud environment, which vCPU-VM configuration is the best for better performance? In this paper, prior to evaluating the latest version of hypervisors (commercial and open source), the best virtual CPU to virtual machine (vCPU-VM) configuration as well as the effect of virtual CPUs on performance is analyzed for each hypervisor. We used Phoronix Test Suite (PTS) benchmarking tool as a traffic generator and analyzer. The results have shown that commercial and open source hypervisors have similar performance. As per our observation, the performance of a system would degrade by improper allocation of vCPUs to VMs, or when there is a massive over-allocation of vCPUs.