A recent paper by Mark Allman titled "Comments on Bufferbloat" may also be of interest: Abstract: While there has been much buzz in the community about the large depth of queues throughout the Internet—the so-called “bufferbloat” problem—there has been little empirical understanding of the scope of the phenomenon. Yet, the supposed problem is being used as input to engineering decisions about the evolution of protocols. While we know from wide scale measurements that bufferbloat can happen, we have no empirically-based understanding of how often bufferbloat does happen. In this paper we use passive measurements to assess the bufferbloat phenomena. http://www.icir.org/mallman/papers/bufferbloat-ccr13.pdf Cheers, Donald -----Original Message----- From: nznog-bounces(a)list.waikato.ac.nz [mailto:nznog-bounces(a)list.waikato.ac.nz] On Behalf Of Andrew Ruthven Sent: 15 February 2013 9:48 p.m. To: NZNOG List Subject: Re: [nznog] Fwd: [ECS Seminars] 2013-02-20 Fred Baker - Buffer Bloat! Hey, There was a talk at linux.conf.au 2013 the other week called Buffer Bloat from a Plumbers Point of View by Stephen Hemminger [0]. This showed the issues at hand, a number of the attempts that have been made to resolve the issues in the Linux kernel, and why they didn't actually work out as well as people hoped. Unfortunately Stephen hasn't had a chance to make a prop that replicates the CoDel approach yet. It was a very entertaining and educational talk and I recommend it (and yes, even Linus Torvalds was in the audience!). Here's the video: http://mirror.linux.org.au/pub/linux.conf.au/2013/mp4/Bufferbloat_from_a_Plu... Cheers! [0] http://www.linux.com/news/special-feature/linux-developers/661550-30-linux-k... On Fri, 2013-02-15 at 12:54 +1300, Andy Linton wrote:

---------- Forwarded message ---------- From: ECS Seminar Notification Date: Fri, Feb 15, 2013 at 10:30 AM Subject: [ECS Seminars] 2013-02-20 Fred Baker - Buffer Bloat! To: ecs-seminars(a)ecs.vuw.ac.nz

Date: Wednesday 20th February 2013 Time: 11:00 AM - 12:30 PM Location: Cotton Club, Cotton 350

Fred Baker is scheduled to present a seminar about: Buffer Bloat!

School of Engineering and Computer Science Seminar

Abstract: The networking industry has looked at Quality of Service numbers times, resulting in the Integrated and Differentiated Services Architectures and numerous papers and articles on the topic. In the past few years, the topic has been popularly renamed "Buffer Bloat", and looked at again from the view of autoconfiguration and deployment. In this talk, we will look at Buffer Bloat in access networks, multistage networks such as WiFi, and data centers, each of which has unique issues and requirements.

Bio: Cisco Fellow Fred Baker has been involved in data communications since 1978 and the development of the Internet since the 1980's. He participated in early development of IEEE 802.1d switching and IP routing. He has served as the Chair of the Internet Engineering Task Force, chaired several working groups, and written or edited numerous RFCs. He now chairs the IETF's IPv6 Operations Working Group, working with the operational community on IPv6 deployment issues. He also contributes to the Broadband Internet Technical Advisory Group (BITAG). At Cisco, he works with researchers within the company, and with university researchers outside, on various projects. He also advises management and technologists on technical direction.

Any queries about this seminar, please email Qiang.Fu(a)ecs.vuw.ac.nz ====================================================================== ======= This message was automatically generated by the ECS Seminars System. View seminars at http://ecs.victoria.ac.nz/Events/Seminars Sub/unsub at http://ecs.victoria.ac.nz/mailman/listinfo/ecs-seminars _______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog

-- Andrew Ruthven Wellington, New Zealand At home: andrew(a)etc.gen.nz | linux.conf.au 2013 | Come join the party... | http://linux.conf.au