MySQL 9.4 Release Notes
        
          The setup_loggers table lists the
          registered loggers:
        
mysql>  select * from performance_schema.setup_loggers;
+------------------------+-------+--------------------+
| NAME                   | LEVEL | DESCRIPTION        |
+------------------------+-------+--------------------+
| logger/error/error_log | info  | MySQL error logger |
+------------------------+-------+--------------------+- NAME: The name of the logger.
- LEVEL: The log level. This can be set to one of the following values:- none
- error
- warn
- info
- debug
 
- DESCRIPTION: A text description of the logger.