Syntax pattern from Microsoft Learn; replace placeholders and choose only one documented alternative before use.
perfmon </res|report|rel|sys>perfmon command
Start Windows Reliability and Performance Monitor in a specific standalone mode. This guide lists the documented syntax and parameters for perfmon; check Microsoft Learn for version, role and execution-context requirements.
Documented syntax
perfmon </res|report|rel|sys>The linked Microsoft Learn article is the upstream authority. Availability may depend on Windows release, role, optional feature or interactive tool context.
Syntax pattern
Parameters, options and clauses
| Option / clause | Description |
|---|---|
/res | Microsoft documents this switch; use the linked reference for accepted values, effects and version limits. |
/report | Microsoft documents this switch; use the linked reference for accepted values, effects and version limits. |
/rel | Microsoft documents this switch; use the linked reference for accepted values, effects and version limits. |
/sys | Microsoft documents this switch; use the linked reference for accepted values, effects and version limits. |
Review a command and its target before running it. Commands that alter files, services, accounts, disks, permissions or databases may be difficult to reverse. Test in a safe environment and keep backups.