Since OLAT 6.0.3 there is a course activity information available. This is a list with the loaded courses. The table is only refreshed by clicking again on the menu entry.
Columns
Active count of users having the course open at this very moment. Whereas open means, open in a tab.
[ms] number of milliseconds it took for the first load from disk.
Calls count of starting the course. This can be 0 in case the course detail page was only displayed.
Title Course title
Author Initial course author
If you are running the Full text search/indexer in the same instance as the OLAT LMS. You will see every course loaded.