Assume that you use Microsoft SQL Server 2014 Reporting Service (SSRS 2014). When you add the performance counters under the "ReportServer:Service" object to Performance Monitor, the values of the counters are zero.
Cumulative Update information The issue was first fixed in the following cumulative update of SQL Server.
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. We recommend that you download and install the latest cumulative updates for SQL Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.