Instructs the Diagnostics Console to show only messages logged from the specified application pool. For example, the switch -filter AppPool:TestAppPool instructs the Diagnostics Console to display only messages logged from the application pool named TestAppPool. Messages originating from other application pools or from unknown application pools are not displayed.
Note:
If the application pool name contains a space, you must enclose the entire name in quotation marks, as shown in this example: -filter AppPool:"Test App Pool"
If this switch is not applied, the Diagnostics Console respects the AppPoolFilter setting in DiagnosticsConsole.exe.config.