|monitor memory buffers
|monitor the procedure cache
|monitor data cache
|monitor overall system performance
|dbcc output buffer
|monitor data sent back to clients
|dbcc input buffer
|monitor data sent from clients
|Maintenance tasks on a database, index, or filegroup.
|Miscellaneous tasks such as enabling trace flags or removing a DLL from memory.
|Tasks that gather and display various types of information.
|Validation operations on a database, table, index, catalog, filegroup, or allocation of database pages.