cFosSpeed 6.60 - How to calibrate your Internet connection
This video shows the cFosSpeed calibration and learning phase after the first install. Also you can see how to calibrate manually in case the Calibration Done value is bad.
The calibration of Traffic Shaping is is necessary to determine exact connection speed and performance so as to ensure optimal download and upload rates will be attained while the ping remains low.
Hint: Depending on how much you use your connection, this phase can last for a few days. However, you can speed up this process by sending yourself a big file by e-mail, thereby effectively running an upload for several minutes at full bandwidth. Several PCs are best calibrated without interference.