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MySQL 8.0 Reference Manual  /  ...  /  The ps_setup_enable_instrument() Procedure

26.4.4.10 The ps_setup_enable_instrument() Procedure

Enables Performance Schema instruments with names that contain the argument. Produces a result set indicating how many instruments were enabled. Already enabled instruments do not count.

Parameters
  • in_pattern VARCHAR(128): The value used to match instrument names, which are identified by using %in_pattern% as an operand for a LIKE pattern match.

    A value of '' matches all instruments.

Example

Enable a specific instrument:

mysql> CALL sys.ps_setup_enable_instrument('wait/lock/metadata/sql/mdl');
+----------------------+
| summary              |
+----------------------+
| Enabled 1 instrument |
+----------------------+

Enable all mutex instruments:

mysql> CALL sys.ps_setup_enable_instrument('mutex');
+-------------------------+
| summary                 |
+-------------------------+
| Enabled 177 instruments |
+-------------------------+

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