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An Minor Diversion into DNSSEC….
I realised recently an interesting milestone has been reached, that will thrill the people who have slaved on DNSSEC for over a decade: DNSSEC running end-to-end, into the house the way “it should...
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Bufferbloat goings on…
The bufferbloat front has appeared quiet for several months since two publications hit CACM (1), (2) and several videos hit YouTube, though I have one more article to write for IEEE Spectrum (sigh…)....
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Fundamental Progress Solving Bufferbloat
Kathie Nichols and Van Jacobson today published an article entitled ”Controlling Queue Delay” in the ACM Queue. which describes a new adaptive active queue management algorithm (AQM), called CoDel...
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The Next Nightmare is Coming
BitTorrent was NEVER the Performance Nightmare BitTorrent is a lightning rod on two fronts: it is used to download large files, which the MPAA sees as a nightmare to their business model, and...
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A Milestone Reached: CoDel is in Linux!
The CoDel AQM algorithm by Kathie Nichols and Van Jacobson provides us with an essential missing tool to control queues properly. This work is the culmination of their at three major attempts to solve...
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The Bufferbloat Bandwidth Death March
Latency much more than bandwidth governs actual internet “speed”, as best expressed in written form by Stuart Chesire’s It’s the Latency, Stupid rant and more formally in Latency and the Quest for...
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The Internet is Broken, and How to Fix It
Many real time applications such as VOIP, gaming, teleconferencing, and performing music together, require low latency. These are increasingly unusable in today’s internet, and not because there is...
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The First Bufferbloat Battle Won
Bufferbloat was covered in a number of sessions at the Vancouver IETF last week. The most important of these sessions is a great explanation of Kathie Nichols and Van Jacobson’s CoDel (“coddle”)...
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I’m attending the International Summit for Community Wireless Networks
I will be giving a updated version of my bufferbloat talk there on Saturday, October 6. The meeting is about community wireless networks (many of which are mesh wireless networks) on which bufferbloat...
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TCP Small Queues
Linux 3.6 just shipped. As I’ve noted before, bloat occurs in multiple places in an OS stack (and applications!). If your OS TCP implementation fills transmit queues more than needed, full queues will...
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Bufferbloat in switches/bridges
I received the following question today from Ralph Droms. I include an edited version of my response to Ralph. On Thu, Jun 20, 2013 at 9:45 AM, Ralph Droms (rdroms) <rdroms@yyy.zzz> wrote:...
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Best Practices for Benchmarking CoDel and FQ CoDel (and almost anything else!)
The bufferbloat project has had trouble getting consistent repeatable results from other experimenters, due to a variety of factors. This Wiki page at bufferbloat.net attempts to identify the most...
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Traditional AQM is not enough!
Latency, once incurred, cannot be undone, as best first explained by Stuart Cheshire in his rant: “It’s the latency, Stupid.” and more formally in “Latency and the Quest for Interactivity.” Any...
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Bufferbloat and Other Challenges
Vint Cerf wrote a wonderful piece on the problems I’ve been wrestling with the last number of years, called “Bufferbloat and Other Internet Challenges“. It is funny how one thing leads to another; I...
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Home products that fix/mitigate bufferbloat…
Bufferbloat is the most common underlying cause of most variable bad performance due to latency on the Internet; latency is called “lag” by gamers. Trying to steer anything the size of the Internet...
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The Blind Men and the Elephant
Bufferbloat is responsible for much of the poor performance seen in the Internet today and causes latency (called “lag” by gamers), triggered even by your own routine web browsing and video playing....
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