File system performance comparison between Linux-based hypervisors ESXi and Proxmox

This paper presents the file system performance a comparison of Linux-based hypervisors (type-1). ESXi and Proxmox were selected representing the typical type-1 Linux-based hypervisors. Both hypervisors contain similar Linux-based architectures at first sight, but in the details, significant differences will appear. For our experiments, we have chosen Filebench as the benchmarking tool. Filebench is recognized for its great flexibility and adaptability. This benchmark allows the simulation of real server applications. Linux distribution CentOS 9, was employed as the guest operating system. Our tests operated with few virtual machines, simultaneously (one to four). This paper includes a math model of the Linux-based virtual environments (type-1), which is associated by a proper experiment in the form of a specific case study. We utilize the model to explain the experimental performance results.