22.2.3.5 Determining What Is Instrumented

It is always possible to determine what instruments the Performance Schema includes by checking the setup_instruments table. For example, to see what file-related events are instrumented for the InnoDB storage engine, use this query:

mysql> SELECT * FROM setup_instruments WHERE NAME LIKE 'wait/io/file/innodb/%';
+--------------------------------------+---------+-------+
| NAME                                 | ENABLED | TIMED |
+--------------------------------------+---------+-------+
| wait/io/file/innodb/innodb_data_file | YES     | YES   |
| wait/io/file/innodb/innodb_log_file  | YES     | YES   |
| wait/io/file/innodb/innodb_temp_file | YES     | YES   |
+--------------------------------------+---------+-------+

An exhaustive description of precisely what is instrumented is not given in this documentation, for several reasons: