https://dev.mysql.com/performance-schema.html
The Performance Schema has these characteristics: The Performance Schema provides a way to inspect internal execution of the server at runtime. An “event” is anything the server does that takes time and has been instrumented so that timing ...
https://dev.mysql.com/program-options.html
This is common for options that you want the program to use each time it runs. This method is useful for options that you want to apply each time the program runs. Options are processed in order, so if an option is specified multiple times, the last ... There are several ways to specify options for MySQL programs: List the options on the command line following the program ...
https://dev.mysql.com/programs-overview.html
mysql_tzinfo_to_sql This program loads the time zone tables in the mysql database using the contents of the host system zoneinfo database (the set of files describing time zones). Later sections provide a more detailed description of each one, with ...
https://dev.mysql.com/query-log.html
To disable or enable the general query log or change the log file name at runtime, use the global general_log and general_log_file system variables. You can also rename the general query log file at runtime by disabling the log: SET GLOBAL ... The ...
https://dev.mysql.com/replication-bugs.html
When you have determined that there is no user error involved, and replication still either does not work at all or is unstable, it is time to send us a bug report. Please spend some time and effort in preparing a good bug report. We need to obtain ...
https://dev.mysql.com/replication-gtids-concepts.html
If binary logging is disabled (log_bin is OFF), or if log_slave_updates is disabled, the server stores the GTID belonging to each transaction together with the transaction in the mysql.gtid_executed table at transaction commit time. If binary ... A ...
https://dev.mysql.com/replication-gtids-lifecycle.html
If a GTID was assigned for the transaction, the GTID is persisted atomically at commit time by writing it to the binary log at the beginning of the transaction (as a Gtid_log_event). If binary logging is enabled on the slave, the GTID is persisted ... The life cycle of a GTID consists of the following steps: A transaction is executed and committed on the ...
https://dev.mysql.com/replication-options-master.html
rpl_semi_sync_master_timeout Property Value Command-Line Format --rpl-semi-sync-master-timeout=# System Variable rpl_semi_sync_master_timeout Scope Global Dynamic Yes SET_VAR Hint Applies No Type Integer Default Value 10000 A value in milliseconds ... This section describes the server options and system variables that you can use on replication master ...
https://dev.mysql.com/show-engine.html
An NdbTransaction is created each time a table schema operation (such as CREATE TABLE or ALTER TABLE) is performed on an NDB table. In general, one of these is created each time a data manipulation statement is performed by an SQL node. SHOW ENGINE ...
https://dev.mysql.com/sys-host-summary-by-file-io-type.html
total_latency The total wait time of timed occurrences of the file I/O event for the host. max_latency The maximum single wait time of timed occurrences of the file I/O event for the host. These views summarize file I/O, grouped by host and event ...
