perfSONAR is an infrastructure for network performance monitoring, making it easier to solve end-to-end performance problems on paths crossing several networks. It contains a set of services delivering performance measurements in a federated environment. perfSONAR has been developed through an international collaboration led by Internet2, ESnet, Indiana University, and GEANT.

ESnet has deployed perfSONAR services at over 45 locations, and recommends that all sites deploy at least one perfSONAR host as well. See the fasterdata perfSONAR HOWTO for more information.


perfSONAR Training Videos

The Department of Energy’s Energy Sciences Network (ESnet), and the Network Startup Resource Center (NSRC) at the University of Oregon have teamed up to create an extensive video training library to help organizations improve the performance of their networks by deploying the perfSONAR network measurement tools and the Science DMZ network architecture.  The library can be found here:…  Read More

perfSONAR Podcast

The perfSONAR project collaborated on a podcast with RCE (Research Computing and Engineering), a group that explores topics relevant to the High Performance Computing and Research Computing communities.This podcast offers an introduction to perfSONAR, as well as discussion about what the future holds.  It is ~45 minutes in length, and can be found…  Read More


ESnet's quick reference perfSONAR HOWTO Guide.  Read More

QuickStart for Network Engineers

The primary value of perfSONAR for network engineers is to detect packet loss in unexpected places. Of course, packet loss can be caused by congestion and the only way to eliminate it when this occurs is to increase capacity.  In our experience, there are also many paths with non-congestive packet loss, due to bad fibers/optics, misconfigured switch buffers, and so on, and this loss goes…  Read More

Success Stories

Some example uses of perfSONAR to find network performance problems.  Read More

ESnet perfSONAR Dashboard

One of the most useful ways to view perfSONAR results in via the "Maddash" Dashboard.  Read More

perfSONAR Dashboard

One of the most useful ways to view perfSONAR results in via the "Maddash" Dashboard.  Read More

perfSONAR for Department of Energy Sites

Specific perfSONAR information for Department of Energy Sites.  Read More

ESnet perfSONAR services

List of ESnet perfSONAR service URLs.  Read More

ps plot

Case Study: Improving performance for US Atlas

A perfSONAR Case Study from the US Atlas project.  Read More