- 
Open Performance 
- 
Right-click the System Monitor details pane and click Add Counters. - 
Or, click the   -  button on the toolbar. 
- 
To monitor any computer on which the monitoring console is run, click Use local computer counters. - 
Or, to monitor a specific computer, regardless of where the monitoring console is run, click Select counters from computer and specify a computer name (the name of the local computer is selected by default). 
- 
In Performance object, click an object to monitor. The Processor object is selected by default. 
- 
To monitor all counters, click All counters. - 
Or, to monitor only selected counters, click Select counters from list and select the counters you want to monitor. The % Processor Time counter is selected by default. 
- 
To monitor all instances of the selected counters, click All instances. - 
Or, to monitor only selected instances, click Select instances from list and select the instances you want to monitor. The _Total instance is selected by default. 
- 
Click Add.