21.9.1.5. The setup_timers Table

The setup_timers table shows the currently selected event timers:

mysql> SELECT * FROM setup_timers;+-----------+-------------+| NAME      | TIMER_NAME  |+-----------+-------------+| idle      | MICROSECOND || wait      | CYCLE       || stage     | NANOSECOND  || statement | NANOSECOND  |+-----------+-------------+

The setup_timers table has these columns:

The setup_timers.TIMER_NAME value can be changed to select a different timer. The value can be any of the values in the performance_timers.TIMER_NAME column. For an explanation of how event timing occurs, see Section 21.2.3.1, "Performance Schema Event Timing".

Modifications to the setup_timers table affect monitoring immediately. Events already in progress may use the original timer for the begin time and the new timer for the end time, which may lead to unpredictable results. If you make timer changes, you may want to use TRUNCATE TABLE to reset Performance Schema statistics.