We have a few sites that are timing out based on the total page load time, and generating a alert in site24.   While it captures a lot of information related to ping, dns, screen capture etc, it does not help in diagnosing a partial page load issue.

Ideally it would be great to capture the waterfall of this connection to determine if it is hanging on a specific element or elements or on first byte, etc.

If it is too difficult to implement a full waterfall, at least some addtional information to help troubleshoot these kinds of issues would be great.   Successfull connection, first byte transferred, total bytes transferred etc.

As it stands now, it is almost impossible to determine why the alert fired other than the page took longer than 15 seconds.