Windows Performance Monitor

Windows Performance Monitor (perfmon) is the definitive MMC snap-in for real-time telemetry and historical analysis of system resources.

Perfmon provides deep visibility into the Windows stack through Data Collector Sets and real-time counters. You can track specific metrics like % Processor Time, Available MBytes (memory), and Disk Queue Length to pinpoint bottlenecks. It allows for automated alerts when thresholds are breached and generates comprehensive HTML reports for capacity planning. Use it to baseline performance across local or remote instances (via RPC) and diagnose resource contention issues before they impact your users.

https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/perfmon