iPerf3 is a tool developed to measure and tune network throughput. It is a cross-platform tool that can produce standardized performance measurements for any network. iPerf3 provides client and server functionality, and an ability to create data streams to measure the throughput between the two ends in one or both directions.

iPerf3 - SpeedTest Server on Linux CentOS Stream 8 will be very useful for network administrators who need to constantly keep an eye on bandwidth performance. Even though it has just a command line instead of interface, it provides powerful tweaking assistance on demand.

iPerf3 Features:

Client and server can have multiple simultaneous connections.

Can run for specified time, rather than a set amount of data to transfer.

Run the server as a daemon.

Ignore TCP slow-start.

Set target bandwidth for UDP and TCP.

Set IPv6 flow label.

Set congestion control algorithm.

Output in JSON format.

Disk read and write tests.