iperf3 is a command-line utility for active measurement of network performance on IP networks.
It’s designed to measure the maximum achievable bandwidth between endpoints and report mss, and related parameters. The project is a from-scratch redesign of the original iperf with a smaller, simpler code base and a reusable library implementation.
This is free and open source software.
Key Features
- Supports TCP, UDP, and SCTP network performance testing.
- Offers tuning of parameters related to timing, protocols, and buffers.
- Includes optional JSON output for automation and integration.
- Provides a zero-copy mode for sendfile()-based data transfers.
- Can set CPU affinity for performance testing scenarios.
- Includes a library version of its functionality for use in other programs.
Website: github.com/esnet/iperf
Support:
Developer: ESnet / Lawrence Berkeley National Laboratory
License: BSD 3-Clause License
iperf3 is written in C. Learn C with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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