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https://dev.mysql.com/doc/refman/5.7/en/sys-memory-by-user-by-current-bytes.html
Rows for which the USER column in the underlying Performance Schema table is NULL are assumed to be for background threads and are reported with a host name of background. By default, rows are sorted by descending amount of memory used. The ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-account-enabled.html
Returns YES or NO to indicate whether Performance Schema instrumentation for a given account is enabled. Parameters in_host VARCHAR(60): The host name of the account to check. Example mysql> SELECT sys.ps_is_account_enabled('localhost', 'root'); ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-consumer-enabled.html
Returns YES or NO to indicate whether a given Performance Schema consumer is enabled, or NULL if the argument is NULL. If the argument is not a valid consumer name, an error occurs. (Prior to MySQL 5.7.28, the function returns NULL if the argument ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-instrument-default-enabled.html
Returns YES or NO to indicate whether a given Performance Schema instrument is enabled by default. Example mysql> SELECT sys.ps_is_instrument_default_enabled('memory/innodb/row_log_buf'); ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-instrument-default-timed.html
Returns YES or NO to indicate whether a given Performance Schema instrument is timed by default. Example mysql> SELECT sys.ps_is_instrument_default_timed('memory/innodb/row_log_buf'); ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-setup-disable-background-threads.html
Produces a result set indicating how many background threads were disabled. Example mysql> CALL sys.ps_setup_disable_background_threads(); +--------------------------------+ | summary | +--------------------------------+ | Disabled 24 background ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-setup-disable-consumer.html
Disables Performance Schema consumers with names that contain the argument. Parameters consumer VARCHAR(128): The value used to match consumer names, which are identified by using %consumer% as an operand for a LIKE pattern match. Example Disable ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-setup-disable-instrument.html
Disables Performance Schema instruments with names that contain the argument. 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. Example ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-setup-enable-background-threads.html
Produces a result set indicating how many background threads were enabled. Example mysql> CALL sys.ps_setup_enable_background_threads(); +-------------------------------+ | summary | +-------------------------------+ | Enabled 24 background threads ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-setup-enable-consumer.html
Enables Performance Schema consumers with names that contain the argument. Parameters consumer VARCHAR(128): The value used to match consumer names, which are identified by using %consumer% as an operand for a LIKE pattern match. Example Enable all ...