speedtest

A speedtest is a diagnostic tool that measures the actual throughput of a network connection by downloading and uploading data to a remote server and reporting the results in megabits per second. It is used to verify that a connection is delivering the bandwidth expected from an ISP or internal network link, and to identify discrepancies between advertised and real-world speeds. Speedtest tools like Speedtest.net or iPerf (used internally between two endpoints) are common first steps when users report slow Internet or network performance.