I set up Data Collection for simple and basic monitoring of instances of SQL Server 2008 R2 (/2012) (is simple, accessible for and with very nice colors for my boss :-)
But one of instances showing negative numbers in Query Statistic History report, doesn't matter if is connected from local host or from another PC
Please to see image
My question is: what happened (or if is a bug in SSMS)?
How can I (and if is possible) to test correctness of the displayed values,