When using System Monitor, a performance object may fail to appear in the Performance Object drop-down list in the Add To Chart dialog?
If the extensible performance DLL is marked as disabled, this problem will occur.
In tip 2874, we learned how to intentionally disable a an extensible performance DLL.
The DLL can be automatically disabled if Windows 2000 detects a problem with the DLL.
Check the application event log for events 1017 or 1018, which are posted by the 'Perflib' source. Look for other events that may give a reason why the library is being disabled. Record these events for any subsequent support call.
If the library gets automatically disabled again, call the library provider for support.