iperf3 3 and TCP maximum segment size (MSS)

April 12, 2021 | minutes read

The above diagram I diagrammed illustrates the impact to a network packet when setting the maximum segment size in iperf3. With an MSS of 1436, the segment (i.e. TCP payload) ends up 1424, due to the overhead of the 12 byte TCP options.


I’m Matt Chung. I’m a software engineer, seasoned technology leader, and father currently based in Seattle and London. I love to share what I know. I write about topic developing scalable & fail-safe software running in the AWS cloud, digital organization as a mechanism for unlocking your creativity, and maximizing our full potentials with personal development habits.

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