Test your broadband link

What properties can you test?

Our online tools can measure your link bandwidths and router queue sizes in both upstream and downstream directions. Link bandwidths and router queue sizes critically affect the performance of emerging applications, such as BitTorrent, VoIP, and online games.

Why test your broadband link?

Learn more about your broadband service: Today, residential ISPs do not clearly specify the quality of service they provide. Instead, they often use phrases such as "link speeds up to 6 Mbps". Our tools enable you yo measure the service you are actually getting. Once we have sufficient number of data points, we will publish aggregate statistics of ISPs' performance on these web pages.

Help systems researchers and application developers: Broadband networks are some of the least understood parts of the Internet. We will make the data about your link characteristics available for researchers and developers wishing to test the performance of their designs via simulation and emulation experiments.

Before starting the measurement, we would like you to answer the following questions regarding your broadband connection. This is optional.

My broadband connection is supposed to have Kbps downstream bandwidth and Kbps upstream bandwidth.
My broadband provider (ISP) is:
My ISP uses	Cable DSL EVDO UMTS GPRS/EDGE unknown Other:	My machine connects using a	wired network wireless network unknown

The measurement will take approximately 90 seconds.
We can only measure broadband links with bandwidths less than 10 Mbps.
To allow accurate measurements you should stop any large downloads (e.g., BitTorrent) that might run in the background.
You can find more details about our measurement tool and how it works here.

Who are we?

We are researchers at the Max Planck Institute for Software Systems. Our research focuses on characterizing residential broadband networks and understanding their implications for the designers of future protocols and applications. In case you have questions about this tool or our research, please visit our broadband project webpage or contact us via e-mail: broadband @at@ mpi-sws mpg de

Faculty		Students
Krishna P. Gummadi Stefan Saroiu		Marcel Dischinger Andreas Haeberlen