fasterdata.es.netfasterdata.es.netESnet Network Performance Knowledge Base

perfSONAR

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, RNP, 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 HOWTO

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 unnoticed.  perfSONAR is also very useful to quantify the performance impact of a site border firewall. Read More »

perfSONAR & NTP Amplification

Recent "NTP Amplification" attacks can cause problems with devices that use NTP, such as the pS Performance Toolkit. Learn how you can protect your deployments. Read More »

Success Stories

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

Troubleshooting

Techniques to aid with network troubleshooting. 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 »

Client API

How to write perfSONAR clients. 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 »