iPerf3 Blog
Practical guides on local network testing, Wi-Fi diagnostics, and getting the most out of iPerf3 on iPhone, iPad, Mac, and Android.
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How to Run an iPerf3 Server (Phone, Mac, NAS, Router)
How to run an iPerf3 server on a phone, Mac, NAS, or router so another device can measure throughput to it, plus the port and firewall basics.
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iPerf3 Tutorial: How to Use iPerf3 Step by Step
An iPerf3 tutorial for beginners: what iPerf3 is, how the client and server work, and how to run your first throughput test — no command line needed.
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How to Test Your Mesh Wi-Fi Speed (Eero, Nest, UniFi)
How to test your mesh Wi-Fi speed the right way: use iPerf3 to measure real throughput at each node and the backhaul between them, not your ISP.
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How to Test Network Performance in a Homelab (7 Tools)
How to test network performance in a homelab, one layer at a time: which tool to use for throughput, latency, the NIC and the ISP, from iperf3 to mtr.
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How to Test Your LAN Speed (Not the Internet): The Right Way
Speedtest measures your ISP, not your LAN. Here is how to test the real speed of your home or office network with iPerf3 in five minutes, no CLI required.
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Speedtest vs iPerf3: Why Your Wi-Fi Speed Test Is Probably Wrong
Speedtest measures your ISP. iPerf3 measures your actual Wi-Fi and LAN. Here is when to use which, and how to run iPerf3 on iPhone, iPad, Mac, or Android.
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iPerf3 on iPhone and Android: A Guide to Mobile Network Testing
Run iPerf3 client and server tests directly on iPhone, iPad, and Android without SSH, jailbreak, or a laptop. Setup, parameters, and reading the results.
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10 GbE Home Network? Here's How to Test It Properly
A 10 GbE home network needs the right test setup or it will look slower than gigabit. Here is how to measure 10 GbE throughput with iperf3 and what to expect.
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How to Prove Your ISP Is Throttling You, With Real Data
You can prove ISP throttling with iperf3, but only if you set the test up correctly. Here is what throttling actually looks like, and how to gather evidence.
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VPN Throughput Testing: A Practical Guide for Real Numbers
Measure real VPN throughput with iperf3, not Speedtest. Isolate tunnel overhead, CPU bottlenecks, and MTU issues. Compare commercial VPNs and corporate IPsec.
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Wi-Fi Dead Zones: How to Find and Fix Them With Network Testing
Use iPerf3 to map Wi-Fi dead zones room by room, distinguish coverage problems from interference, and decide whether to move the AP, add mesh, or change bands.
