+setup_instruments: To view the Mutex or Stage page pstop will try to
+change the configuration if needed and if you have grants to do this.
+If the server is --read-only or you don't have sufficient grants
+and the changes can not be made these pages may be empty.
+Pior to stopping pstop will restore the setup_instruments
+configuration back to its original settings if it had successfully
+updated the table when starting up.
+