esnet/iperf

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

8718 stars · 1443 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

iperf3 is a command-line tool for actively measuring the maximum achievable bandwidth on IP networks over TCP, UDP, and SCTP. It reports throughput, packet loss, and other metrics, and is developed by ESnet / Lawrence Berkeley National Laboratory under a three-clause BSD license.

Use cases

• measure network bandwidth between two hosts
• test throughput over TCP, UDP, or SCTP
• diagnose network performance problems
• benchmark packet loss and jitter
• run network performance tests as part of perfSONAR
• get JSON output of throughput tests for automation

When to choose

• you need a standard, widely-used tool for active bandwidth measurement
• you want tunable test parameters for timing, protocols, and buffers
• you need a lightweight C tool with a library version for embedding
• you are troubleshooting or benchmarking IP network paths

When to avoid

• you need backwards compatibility with original iperf or iperf2 clients/servers
• you need a GUI-based network testing tool
• you require passive traffic monitoring rather than active measurement

Facets

cli-tool · maturity active

networking monitoring benchmarking developer-tools networking performance developer-tools bsd windows cli cross-platform network-bandwidth throughput-testing tcp udp sctp iperf3 network-diagnostics c command-line linux macos android

Member repositories

For agents

markdown · JSON · MCP: product_card(name="esnet/iperf")