iperf3

Iperf3 is a tool used to measure the speed and performance of a network connection between two devices. It sends a controlled stream of data from one device (server) to another (client) to test how much data can be transferred quickly and reliably. This helps network administrators identify bottlenecks, evaluate network quality, and optimize performance. Iperf3 reports metrics like transfer rate (bandwidth), latency, and packet loss, providing a detailed picture of network health and capacity in an understandable way.