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https://dev.mysql.com/doc/refman/9.7/en/performance-schema-instance-tables.html
They provide event names and explanatory notes or status information: cond_instances: Condition synchronization object instances file_instances: File instances mutex_instances: Mutex synchronization object instances rwlock_instances: Lock ...There ...
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-memory-summary-tables.html
In addition, each memory summary table that is aggregated by account, host, user, or thread is implicitly truncated by truncation of the connection table on which it depends, or truncation of memory_summary_global_by_event_name. Operation counts ...
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-miscellaneous-tables.html
connection_control_failed_login_attempts: The current number of consecutive failed connection attempts per account. The following sections describe tables that do not fall into the table categories discussed in the preceding sections: ...
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-replication-group-members-table.html
The network addresses shown are the addresses used to connect clients to the group, and should not be confused with the member's internal group communication address specified by group_replication_local_address. This is the address which clients ...
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-setup-meters-table.html
This column can be modified DESCRIPTION: A string describing the meter.
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-socket-summary-tables.html
When a connection terminates, the row in socket_summary_by_instance corresponding to it is deleted. COUNT_MISC, SUM_TIMER_MISC, MIN_TIMER_MISC, AVG_TIMER_MISC, MAX_TIMER_MISC These columns aggregate all other socket operations, such as CONNECT, ...
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-tp-thread-group-stats-table.html
The tp_thread_group_stats table has these columns: TP_GROUP_ID The thread group ID. This number is incremented when a statement starts executing, not when it finishes. QUERIES_QUEUED The number of statements received that were queued for execution.
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-variables-info-table.html
If a client connects as user17 from host host34.example.com using the account 'user17'@'%.example.com, SET_USER and SET_HOST are user17 and host34.example.com, respectively. For proxy user connections, these values correspond to the external (proxy) ... The variables_info table shows, for each system variable, the source from which it was most recently set, and its range of ...
https://dev.mysql.com/doc/refman/9.7/en/perl-installation.html
These tests attempt to connect to the local MySQL server using the default user name and password. The default password is “no password.”) If you cannot connect to the server with those values (for example, if your account has a password), the ... MySQL Perl support requires that you have installed MySQL client programming support (libraries and header ...
https://dev.mysql.com/doc/refman/9.7/en/point-in-time-recovery-binlog.html
After editing the file, apply the contents as follows: $> mysql -u root -p < tmpfile If you have more than one binary log to apply on the MySQL server, use a single connection to apply the contents of all binary log files that you want to process.