In PC12.20, Pagination feature under Test Plan->Test Design->Diagnostics tab does not work
Issue occurs due to a pagesize resolution on that particular page. Below workaround has been verified to be working to address the issue:
By default PC tries to display 15 probes per page and you may get better display by reducing this number.
edit in a text editor
<Performance Center Server>\PCWEB\ManageLoadTest\DiagnosticsJ2EENETConfigWindow.aspx
search for 'pagesize', you can change to the value you want.
you may find that you have
might work better for you.
No need to restart the service, just save the new value and re-open the popup, (popup will take a few extra seconds to load the first time).
If you find that this or any post resolves your issue, please be sure to mark it as an accepted solution.