ps_setup_disable_background_threads.sql

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DROP PROCEDURE IF EXISTS ps_setup_disable_background_threads;

DELIMITER $$

CREATE DEFINER='mysql.sys'@'localhost' PROCEDURE ps_setup_disable_background_threads ()
    COMMENT '
Description
-----------

Disable all background thread instrumentation within Performance Schema.

Parameters
-----------

None.

Example
-----------

mysql> CALL sys.ps_setup_disable_background_threads();
+--------------------------------+
| summary                        |
+--------------------------------+
| Disabled 18 background threads |
+--------------------------------+
1 row in set (0.00 sec)
'
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.threads
       SET instrumented = 'NO'
     WHERE type = 'BACKGROUND';

    SELECT CONCAT('Disabled ', @rows := ROW_COUNT(), ' background thread', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;