Let's make TCP faster

Transmission Control Protocol (TCP), a fundamental component of internet communication, faces challenges in delivering web content efficiently due to its inherent limitations, leading to high latency in many cases. Researchers, including Yuchung Cheng from the Make The Web Faster Team, are exploring several enhancements to reduce this latency and improve TCP performance. Key strategies include increasing the TCP initial congestion window to 10 packets, which reduces network latency by over 10%, and decreasing the initial timeout from 3 seconds to 1 second to better fit modern internet speeds. The implementation of TCP Fast Open (TFO) allows for the inclusion of HTTP requests in the initial TCP SYN packet, effectively reducing page load times by an average of 10% and more in certain situations. Additionally, the Proportional Rate Reduction (PRR) algorithm is introduced to manage packet loss more efficiently by adjusting transmission rates based on network congestion, and it is now part of the Linux kernel. All these innovations are open-source, and the team aims to collaborate with industry and academia to enhance TCP across the internet, disseminating their work through Linux kernel updates, IETF standards proposals, and research publications.

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