File system performance comparison with KVM under different disk layout complexity

This paper focuses on comparing file system performance under various disk layout complexities using the same hypervisor. KVM was selected as the hypervisor for this study, and two distinct disk layout complexities were chosen for the guest operating system side. Filebench was the benchmarking tool used due to its remarkable flexibility in simulating realistic application and server behaviors. CentOS 9 was used as the guest operating system, representing the Linux family. The experimental tests involved running one, two, three, and four virtual machines simultaneously. The paper study includes a mathematical model of the virtual environment with different disk layout complexities, followed by a real experiment presented as a case study. This model is used to interpret the results obtained from the experiment.