File system performance comparison with Proxmox VE and KVM as type-1 Linux-based hypervisors

This paper provides a comparative analysis of file system performance between type-1 Linux-based hypervisors. Proxmox VE and KVM were selected as representative examples of type-1 Linux-based hypervisors. Though both hypervisors initially appear to have similar Linux-based and QEMU-based architectures, significant differences become apparent upon closer examination. For our experiments, we utilized Filebench due to its exceptional flexibility and adaptability, which allow it to emulate practical applications within realistic server environments. CentOS 9 was chosen as the guest operating system, serving as a common example of Linux distributions. Tests were performed with one, two, three, and four virtual machines running concurrently. Furthermore, this paper includes a mathematical model of the type-1 virtual environment, supplemented by a real-world experiment that serves as a case study. The mathematical model is used to interpret the performance results obtained from the experiments.