Currently CDNperf uses Pingdom to gather its data. All CDNs are in the same Cluster group and these are the locations it uses:
Chicago, IL
Copenhagen, Denmark
Washington, DC
Milan, Italy
San Jose, CA
Lisbon, Portugal
Toronto, Canada
Las Vegas 2, NV
Amsterdam 5, Netherlands
Strasbourg 2, France
Charlotte 2, NC
I understand that cdnperf data does not reflect real life performance but with our limited resources this was the best we could do.
If you have suggestions on how to make it better please let us know.