pveperf

Pveperf is a command line tool used in Proxmox Virtual Environment (PVE) to measure storage and network performance of virtual machines (VMs). It is designed specifically for assessing the performance of storage I/O subsystems using various benchmarking techniques. By running pveperf, users can determine the maximum throughput and latency of their storage systems, helping them optimize VM performance and identify potential bottlenecks. Pveperf performs a series of sequential and random read and write operations on a specified disk or VM, generating data that can be used to evaluate and compare performance across different storage configurations. The tool supports different storage types including local disks, network-attached storage (NAS) devices, and storage area networks (SANs). Pveperf utilizes a combination of synchronous and asynchronous I/O operations to measure both bandwidth and latency, providing a comprehensive performance analysis. It employs multi-threading to maximize CPU utilization and measure the system's ability to handle concurrent workloads. Performance results generated by pveperf are presented in terms of IOPS (Input/Output Operations per Second), throughput, and latency, giving users a quantitative understanding of their storage system's capabilities. Pveperf can be used to benchmark individual disks, LVM (Logical Volume Manager) volumes, or virtual machine disks, allowing users to evaluate the performance impact of different configurations. Overall, pveperf is a powerful tool in PVE that aids in optimizing VM performance, identifying storage bottlenecks, and making informed decisions about storage configuration and upgrades.