+* User mode: show ordering based on how long users are running
+queries, or the number of connections they have to MySQL. This is
+really missing a feature in MySQL (see: http://bugs.mysql.com/75156)
+to provide higher resolution query times than seconds. It gives
+some info but if the queries are very short then the integer runtime
+in seconds makes the output far less interesting. Total idle time is also
+shown as this gives an indication of perhaps overly long idle queries,
+and the sum of the values here if there's a pile up may be interesting.
+* Mutex mode: show the ordering by mutex latency [1].
+* Stages mode: show the ordering by time in the different SQL query stages [1].
+
+You can change the polling interval and switch between modes (see below).
+
+[1] pstop will try to configure the mutex and staging settings in
+setup_consumers if it can, and restore them when exiting if it
+changes something.