iperf ☆
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Description:
Tool to measure maximum TCP and UDP bandwidth
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Networking
Tags: networking bandwidth benchmark iperf diagnostics
Install: brew install iperf
About:
Iperf is a classic tool for active network performance measurements. It creates data streams between a client and a server to measure TCP and UDP bandwidth, latency, and packet loss. It remains a standard for diagnosing network throughput issues and validating network capacity.
Key Features:
  • Measures maximum TCP/UDP bandwidth
  • Supports both client and server modes
  • Configurable port and buffer sizes
  • Reports bandwidth, jitter, and packet loss
Use Cases:
  • Benchmarking LAN and WAN throughput
  • Verifying Quality of Service (QoS) configurations
  • Troubleshooting slow file transfer speeds
Alternatives:
  • iperf3 – A newer, incompatible rewrite focused on a simpler codebase and better latency reporting.
  • nuttcp – An alternative with advanced features like traffic shaping and 64-bit counters.
Version History
Detected Version Rev Change Commit
Sep 12, 2025 3:29pm 0 VERSION_BUMP e6fae8f4
Apr 11, 2024 12:12pm 0 VERSION_BUMP 1dfd59da
Mar 15, 2023 6:06am 0 VERSION_BUMP 46ef1dea
Mar 15, 2023 6:06am 0 VERSION_BUMP 4899156c
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