MySQL 9.3 Reference Manual Including MySQL NDB Cluster 9.3
Disables Performance Schema instruments with names that contain the argument. Produces a result set indicating how many instruments were disabled. Already disabled instruments do not count.
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.
Disable a specific instrument:
mysql> CALL sys.ps_setup_disable_instrument('wait/lock/metadata/sql/mdl');
+-----------------------+
| summary |
+-----------------------+
| Disabled 1 instrument |
+-----------------------+
Disable all mutex instruments:
mysql> CALL sys.ps_setup_disable_instrument('mutex');
+--------------------------+
| summary |
+--------------------------+
| Disabled 177 instruments |
+--------------------------+