[e2e] Internet packet dynamics
cottrell at slac.stanford.edu
Sat Mar 13 08:59:39 PST 2004
Fig. 2 in http://www.slac.stanford.edu/xorg/icfa/icfa-net-paper-jan04/ shows the packet losses seen by the PingER project (see http://www-iepm.slac.stanford.edu/pinger/) from the US to various regions of the world since Jan 1995. Other metrics can also be seen in the same web page (e.g. RTT and derived throughput ~ 1460Bytes/(RTT*sqrt(loss)).
From: David G. Andersen [mailto:dga at lcs.mit.edu]
Sent: Friday, March 12, 2004 6:44 PM
To: Sam Liang
Cc: end2end-interest at postel.org
Subject: Re: [e2e] Internet packet dynamics
On Fri, Mar 12, 2004 at 04:46:27PM -0800, Sam Liang scribed:
> Vern Paxson's excellent Sigcomm 97 paper, "End-to-End Internet
> Packet Dynamics", told us a lot about the Internet traffic
> characteristics. But seven years have passed. The Internet has changed
> a lot. In particular, the packet loss rate has dropped a lot. But it's
> not zero. Are there any recent work that study the current Internet
> traffic patterns, such as packet loss rates?
Quite a few. You can get some packte loss numbers in a more recent IMC paper of mine, and I'm sure there are numerous other sources:
As you assume, the loss rate we observed in 2002-ish is much lower than observed by Paxson97. The e2e loss numbers we observed in the 2001 RON study were also quite a bit lower than those that Paxson saw. Those 5 years were a pretty good period for internet bandwidth growth and technological improvement.
work: dga at lcs.mit.edu me: dga at pobox.com
MIT Laboratory for Computer Science http://www.angio.net/
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