Windows NT Performance Monitor is a tool for monitoring resource usage on a computer running Microsoft® Windows NT®. Users can set up charts that present resource usage information in graphical form. Windows NT Performance Monitor has many different counters, each of which measures some resource on the computer.
Windows NT Performance Monitor is extensible so server applications can add their own performance counters. Microsoft SQL Server™ adds counters to Windows NT Performance Monitor to track items such as:
Monitoring with Windows NT Performance Monitor