Bufferbloat is the undesirable latency that comes from a router or other network equipment buffering too much data.

The Bufferbloat projects provide a webspace for addressing chaotic and laggy network performance. We have a number of projects in flight:

The Request to FCC for Saner Software Policies is a response to Docket ET 15-170 which appears to require vendors to lock down the software in Wi-Fi routers, prohibiting experimentation and field testing of new techniques. Read the Press Release and our Letter to the FCC

The Bufferbloat project has largely addressed latency associated with too much buffering in routers. The CoDel and fq_codel algorithms are the first fundamental advance in the state of the art of network Active Queue Management in many, many years. These algorithms have been deployed in millions of computers, and reduce the induced delay from competing traffic on a bottleneck link to the order of 20 msec.

The Make-Wi-Fi-Fast project, with many of the same team members as the Bufferbloat project, intends to improve Wi-Fi's speed and use of the spectrum by inserting CoDel/fq_codel into the Wi-Fi queues, and actively measuring the power required for successful transmission, in order to minimize contention and interference on the RF channel.

These are all united by a desire to:

  • Gather together experts to tackle networking queue management and system problem(s), particularly those that affect wireless networks, home gateways, and edge routers
  • Spread the word to correct basic assumptions regarding goodput and good buffering on the laptop, home gateway, core routers and servers.
  • Produce tools to demonstrate and diagnose the problem
  • Make experiments in advanced congestion management
  • Produce patches to popular operating systems at the device driver, queuing, and TCP/ip layers to fix the problems.

There are several mailing lists, git repositories, and people here that are attempting to address the Bufferbloat and making Wi-Fi fast issues at various levels. We welcome you to join us in this endeavor!

Help Us

This is an export of the old bufferbloat.net site, converted to Hugo format. The sources are available on github. Pull requests to improve things are welcome.

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Recent News & Articles

Jul 6, 2016 Wiki page
RRUL Chart Explanation
Jul 4, 2016 Wiki page
Getting SQM Running Right
Nov 19, 2015 Wiki page

Find us elsewhere

Bufferbloat Mailing Lists
#bufferbloat on Twitter
Google+ group
Archived Bufferbloat pages from the Wayback Machine


Comcast Research Innovation Fund
Nlnet Foundation
Shuttleworth Foundation

Bufferbloat Related Projects

Congestion Control Blog
Lede Project (OpenWrt)
Flent Network Test Suite
The Cake shaper

Network Performance Related Resources

Jim Gettys' Blog - The chairman of the Fjord
Toke's Blog - Karlstad University's work on bloat
Voip Users Conference - Weekly Videoconference mostly about voip
Candelatech - A wifi testing company that "gets it".