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https://dev.mysql.com/doc/refman/8.0/en/performance-schema-binary-log-transaction-compression-stats-table.html
This table shows statistical information for transaction payloads written to the binary log and relay log, and can be used to calculate the effects of enabling binary log transaction compression. For information on binary log transaction ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-build-configuration.html
It is possible to exclude certain parts of the Performance Schema instrumentation. For example, to exclude stage and statement instrumentation, do this: $> cmake . \ -DDISABLE_PSI_STAGE=1 \ -DDISABLE_PSI_STATEMENT=1 For more information, see the ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-connection-tables.html
When a client connects to the MySQL server, it does so under a particular user name and from a particular host. They differ in that, for grant tables, the host part of an account can be a pattern, whereas for Performance Schema tables, the host ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-data-lock-waits-table.html
The data_lock_waits table implements a many-to-many relationship showing which data lock requests in the data_locks table are blocked by which held data locks in the data_locks table. Held locks in data_locks appear in data_lock_waits only if they ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-file-instances-table.html
The file_instances table lists all the files seen by the Performance Schema when executing file I/O instrumentation. If a file on disk has never been opened, it is not shown in file_instances. When a file is deleted from the disk, it is also ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-ndb-cluster-tables.html
The following table shows all Performance Schema tables relating to the NDBCLUSTER storage engine. This is done by default in the background at regular intervals as determined by the ndb_metadata_check_interval system variable, unless disabled ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-obtaining-parent-events.html
Rows of this table have a THREAD_ID column indicating the thread ID of the session that owns the lock, and an EVENT_ID column indicating the Performance Schema event that caused the lock. The relation is based on a nested set data model, so the join ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-applier-filters-table.html
This table shows the replication channel specific filters configured on this replica. Each row provides information on a replication channel's configured type of filter. The replication_applier_filters table has these columns: CHANNEL_NAME The name ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-applier-status-by-coordinator-table.html
For a multithreaded replica, the replica uses multiple worker threads and a coordinator thread to manage them, and this table shows the status of the coordinator thread. For a multithreaded replica, the replication_applier_status_by_worker table ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-replication-applier-status-table.html
This table shows the current general transaction execution status on the replica. The table provides information about general aspects of transaction applier status that are not specific to any thread involved. Thread-specific status information is ...