Performance Schema global_status Table
global_status table contains a list of status variables and their global values. The table only stores status variable statistics for threads which are instrumented, and does not collect statistics for
The table contains the following columns:
|The global status variable name.|
|The global status variable value.|
TRUNCATE TABLE resets global status variables, including thread, account, host, and user status, but not those that are never reset by the server.