Azure DevOps Server (TFS) Operational Intelligence Activity Log

There is a little known feature of Azure DevOps Server, at least the on-prem version, that allows admins to look at the requests made to the server as well as the activity of the JobAgent.

This feature can be accessed by pointing your browser to 
<Base Server URL>/_oi/_diagnostics/activityLog
for example:
https://TFSServer/tfs/_oi/_diagnostics/activityLog


Once there you can switch between two views the Activity log and Job Monitoring by clicking on the tabs on the left.

The activity log shows a list of the requests being made to the server, including the identity of the requestor, the source IP address as well as the HTTP Response Code. I have found this helpful in tracking down when people are having issues.

One of the other nice things is that the activity log is exportable to CSV (see the green highlight above, which makes it very easy to work with in MS Excel and drill down to see just a single requestor.

The Job Monitoring tab shows a number of graphs about the Job Agent, the internal worker process. The graphs are all clickable and drill down to further information. 

I don't access this operational Intelligence information very often, but when I need it, it is information I can't find anywhere else. Hope you find it useful as well