The secret of the macOS Monterey network quality tool @danirukun
Network quality can mean different things, depending on the context. Talking about wireless link quality, often the focus is on Layer 1 properties like RSSI, noise, the Tx/Rx rate etc. Dan Petrov looks at transport layer metrics that can be collected with the new macOS networkQuality tool.
Apple has quietly added a new tool in macOS Monterey for measuring a device’s Internet connectivity quality. You can call the executable networkQuality, which executes the following tests:
Upload/download flows, this seems to be the number of test packets used for the responsiveness tests
Upload/download responsiveness measured in Roundtrips Per Minute (RPM), which according to Apple, is the number of sequential round-trips, or transactions, a network can do in one minute under normal working conditions
The capacity is roughly the same metric you could expect from tools like Fast.com from Netflix, or OOkla’s Speedtest.
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