Video of Preliminary Results presentation now available
Posted by Russell Senior on 27 June 2007The presentation would be a bit different today, given what we’ve learned since in completing our analysis and in further investigation into the text of the Unwire Portland RFP, but this ~one hour video of our March 2007 presentation at the Personal Telco Project monthly meeting provides a description of the approach we took. Oh, and the lighting lacks a lot, but the audio is good and the information is there.
Thanks is due to Gus, who ran the camera and Seth who transcoded and edited the video.
Results presentation at PLUG Advanced Topics
Posted by Russell Senior on 18 June 2007At the last minute, I volunteered to talk at the PLUG Advanced Topics meeting on our methodology and results. It is held at Jax Bar in downtown Portland, on Monday June 18th at 7 p.m. Caleb should be there too. We’ll try to show off some of the Free Software tools we used in our study in the process. If you are interested and/or want to ask questions in person, this is an excellent opportunity.
Additional Long Term Testing
Posted by Caleb Phillips on 10 June 2007
In our report, we raised concern about a reduction in throughput experienced at one of our long-term-test sites. We indicated that more research was needed to determine the extent of this reduction. To this end, we carried out another long-term test (at site B - as referenced in the report) from Wed Apr 25 16:28:06 PDT 2007 to Thu May 24 06:05:41 PDT 2007. At this site, and during this test, we found a mean downstream throughput of 1.86 Mbps (for a 5MB file) and 1.66 Mbps (for a 1MB file). This is in line with our results before the reduction at site A. So, at this point we can say that MetroFi has not throttled throughput accross the network, and the reduction at site A must have been either temporary, or, is not 
network-wide. Of course, to explain the cause or extent of the original reduction would require a broader investigation. Other testing metrics are also similar to previous results, implying that MetroFi has not made significant changes to their network in the last month. It is worth noting, however, that we’re still seeing a strong correlation between packet-loss and time-of-day, suggesting that as interference from other networks, or usage, increases, so does packet loss. This new data-set and some graphs are available in the repository.