Google Looks to Speed Up the Internet
InfoWorld (01/24/12) Paul Krill
Google researchers want to overhaul the Internet's Transmission Control Protocol (TCP) transport layer and have suggested ways to reduce latency. According to the company's Make the Web Faster team, the key to reducing latency is saving round trips. The researchers recommend increasing the TCP initial congestion window to improve TCP speed. "The amount of data sent at the beginning of a TCP connection is currently three packets, implying three round trips to deliver a tiny, 15K-sized content," says Google's Yuchung Chen. "Our experiments indicate that IW10 [initial congestion window of 10 packets] reduces the network latency of Web transfers by over 10 percent." Google also wants the initial timeout reduced from three seconds to one second. The company has developed the TCP Fast Open protocol, which reduces application network latency, and proportional rate reduction for TCP, and the team is encouraging its use. Google's work is open source and disseminated through the Linux kernel, Internet Engineering Task Force standards proposals, and research publications to encourage industry involvement.