The Performance tile accesses the Data Warehouse directly using the published schema, so must have a Data Warehouse connection with the correct permissions for Performance graphs to work.
No Performance graphs anywhere in SquaredUp
If no graphs are showing anywhere in SquaredUp, or you're seeing errors anywhere a graph should be shown, such as a server performance perspective, then you should check the Data Warehouse connection.
If some graphs are shown in SquaredUp then the Data Warehouse is configured correctly, so you should troubleshoot any individual graphs not showing or giving an error, as described below.
No graph shown or 'No values found for the given metric'
No values found for the given metric for the last <time period> at the resolution '<raw/hourly/daily>'.
If a graph tile is blank or you see an error similar to above see No values found for the given metric for the last <time period> at the resolution '<raw/hourly/daily>'
Data warehouse timeout
timeout-command: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.