A new aggregate queue length algorithm for network bottlenecks


Article from Issue 141/2012

The persistent and growing problem of bufferbloat is getting serious relief from a new active queue management tool known as a Controlled Delay – a tool that, thanks to heroic efforts, is now ready for Linux.

The controlled delay management (CoDel) aggregate queue length (AQL) algorithm is the brainchild of Kathleen Nichols and Van Jacobson, who have been working on creating a workable active queue management (AQM) solution for modern broadband-rich networks for 14 years, according to Bell Labs programmer Jim Gettys (one of the creators of X Window), who has been vocal on the problem of bufferbloat that now plagues systems.
Gettys has written quite a bit about bufferbloat and has gotten a lot of people worked up about the continued health of the Internet. But if you’ve missed the discussion, here’s a quick review

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Security Lessons: Bufferbloat

    An abundance of buffers hides the Internet’s dirty little secret.

  • Linux 3.3 Released

    Changes in the new Linux 3.3 release include the merge of kernel code from the Android project.

  • Linux News
    • Red Hat Addresses Secure Boot
    • FSF Addresses Secure Boot
    • Android 4.1 Jelly Bean
  • The New Snort

    Get ready for a bigger and better Snort. If you're used to protecting your systems with this trusty intrusion detection tool, you'll appreciate the new features in the latest version.

  • Brave GNU World

    This column looks into projects and current affairs in the world of free software. This month we focus on better security with Firestarter, a tool that helps you set up a firewall. We also look at a distributed computing project for animation or visualization.

comments powered by Disqus

Direct Download

Read full article as PDF:

Price $2.95