Josh Clark

Experiments in Performance Engineering and Other Things Hi, I’m Josh. Like most people, I contain multitudes. In my professional life, I am a network and performance engineer. I have a deep understanding of the protocols that carry the bits and bytes we rely on for daily life, and I troubleshoot performance issues in…

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Systems & Performance 1 Networking & Internet 1

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An argument for increasing TCP's initial congestion window (2024)

2025108 points52 comments Networking & Internet details

Introduction Google has a long history of performing networking research, making changes, and pushing those changes to the entire internet. In 2011, they published one of my favorite papers, which described their decision to increase the TCP initial congestion window from 1 to 10 on their entire infrastructure. This…