M-Lab dataset: Network Diagnostic Tool (NDT)

Added By fnordquist
NDT is a network performance testing system that allows end-users to attempt to identify computer configuration and network infrastructure problems that degrade their broadband experience. By running a short test between a user’s computer and an NDT server, the tool can provide information on a user’s connection speed and attempt to diagnose what, if any, problems exist. The server collects test results and records the user’s IP address, upload/download speed, packet headers and various TCP variables from the test. NDT is an open source project that is under active development by Internet2.

This dataset includes the test results from users from around the world who have run NDT through Measurement Lab (M-Lab). This data set includes results from various tests run between February 2009 and September 2009. M-Lab is an open server platform on which researchers deploy network measurement tests that generate information on broadband performance for end users. You can run NDT on M-Lab here.

The data will be of interest to researchers who are interested in studying the actual performance of Internet users’ broadband connections.

Details on NDT data can be found at

To learn more about NDT please visit