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Google Research: Let's Make TCP Faster

Google is actively researching ways to improve TCP:

Our research shows that the key to reducing latency is saving round trips. We’re experimenting with several improvements to TCP. Here’s a summary of some of our recommendations to make TCP faster:

  1. Increase TCP initial congestion window to 10 (IW10). The amount of data sent at the beginning of a TCP connection is currently 3 packets, implying 3 round trips (RTT) to deliver a tiny 15KB-sized content.
  2. Reduce the initial timeout from 3 seconds to 1 second.
  3. Use TCP Fast Open (TFO).
  4. Use Proportional Rate Reduction for TCP (PRR).

The database world attacked the network latency with connection pools and pipelining. For reducing network round trips we’ve used JOINs or denormalized data. But all software architectures will benefit from a faster TCP.

Andrei Savu

Original title and link: Google Research: Let’s Make TCP Faster (NoSQL database©myNoSQL)

via: http://googlecode.blogspot.com/2012/01/lets-make-tcp-faster.html