LVM in the Linux environment: performance examination
Borislav Đorđević, Valentina V. Timcenko · Tehnicki vjesnik - Technical Gazette · 2015
Original scientific paperThis paper presents a performance evaluation of LVM (Logical Volume Manager) system under the Linux operating system.The presented work includes proposal of the mathematical modeling of file system access time with and without LVM option.A mathematical model is further validated for the case of 32bit Linux ext3 file system with kernel version 2.6, taking into consideration the comparison of a file system in two defined configurations, with and without LVM.We have created two LVM options, with the same capacity, but different in complexity of the internal structure.The performance is measured using the Postmark benchmarking software application that simulates workload of Internet mail server.We have defined three types of workloads, generally dominated by relatively small objects.Test results have shown that the best option is to use direct file system realization without applying LVM.Benchmark results are interpreted based on provided mathematical model of file system access time.