Hi Lars, This is very interesting study! it provides many useful information for the TCP research at Google.
The queuing and processing delays on slide 12 (or figure 9 in the paper) are mostly <50ms, but the following paper "Characterizing residential broadband networks" published in IMC 2007 measures much higher queuing length ranging from 100ms to a few secs ( http://portal.acm.org/citation.cfm?id=1298306.1298313 figure 13). Any idea about the differences? Thanks, Yuchung On Fri, Jul 9, 2010 at 12:15 AM, Lars Eggert <[email protected]> wrote: > Hi, > > a quick status update. We now have received over 100 donated home gateways, > plus a DSLAM. The students are on their summer break, after which we'll > start running a significantly expanded set of tests over this much larger > population of devices. > > Many of yo have donated boxes and suggested more experiments and better > ways of performing our current tests - thank you! > > In case you are attending IETF-78 in Maastricht and would like to donate a > home gateway, simply bring it. (Or contact me now for shipping details; no > cost to you.) > > We're especially interested in devices from outside the EU and North > America, or any other model we may not have yet (see > http://fit.nokia.com/lars/tmp/2010-hgw-study-devices.txt). And we're still > lacking a CMTS for testing cable modems... > > See you in Maastricht, > Lars > > On 2010-6-2, at 18:36, Lars Eggert wrote: > > Hi, > > > > FYI, a first report with test results for 34 devices is available at > http://fit.nokia.com/lars/tmp/2010-hgw-study.pdf. Slides that summarize > the results are at http://fit.nokia.com/lars/tmp/2010-hgw-study-slides.pdf > . > > > > We have received another 30-odd devices as donations, which we'll add to > the testbed and include in a follow-up study. > > > > If you have an unused, spare home gateway to donate to this effort, > please contact us at [email protected]. We're also interested in > obtaining a DSLAM and a CMTS. > > > > Thanks, > > Lars > > > > On 2010-4-29, at 12:34, Lars Eggert wrote: > >> Hi, > >> > >> for a measurement study done together with Markku Kojo's team at the > University of Helsinki, we're looking to collect as many different NAT home > routers as possible. If you have an old clunker lying around somewhere, > please contact me off-list. I'll cover shipping via DHL. Feel free to > forward this email as you see fit. > >> > >> The boxes will find a permanent home at the University of Helsinki. > Study results will be published openly. The intent is that this collection > become a resource for the community to be shared for future studies. > >> > >> Caveat: The boxes should NAT between Ethernet interfaces - we don't have > DSL or cable access equipment in the lab setup at the moment. > >> > >> Thanks, > >> Lars > > > > > _______________________________________________ > 78attendees mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/78attendees > >
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