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https://dev.mysql.com/doc/refman/8.4/en/innodb-standard-monitor.html
SEMAPHORES This section reports threads waiting for a semaphore and statistics on how many times threads have needed a spin or a wait on a mutex or a rw-lock semaphore. The contents also display information for pending I/O operations and statistics ... The Lock Monitor is the same as the Standard Monitor except that it includes additional lock ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-log-events.html
An event report reported in the event logs has the following format: datetime [string] severity -- message For example: 09:19:30 2005-07-24 [NDB] INFO -- Node 4 Start phase 4 completed This section discusses all reportable events, ordered by ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-statement-tables.html
prepared_statements_instances: Prepared statement instances and statistics The following sections describe the statement event tables. For statistics to be collected for statements, it is not sufficient to enable only the final statement/sql/* ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-status-variable-tables.html
The Performance Schema collects statistics for global status variables only for threads for which the INSTRUMENTED value is YES in the threads table. Statistics for session status variables are always collected, regardless of the INSTRUMENTED value.
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-changelog-13-2-1-0-0.html
Sys Schema Table Statistics: based on the schema_table_statistics sys schema view. For more information, see Section 6.42, “Sys Schema Table Statistics Metrics”. Sys Schema User Statistics: based on the user_summary sys schema view. For more ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-changelog-13-2-4-0-0.html
Important As of this release, 13.2.4.0.0, MySQL 8 is supported. It is not possible to monitor MySQL 8 with earlier versions of Oracle Enterprise Manager for MySQL Database. For more information on the variables added and removed in MySQL 8, see ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-config-metric-performanceschema-category.html
Max Index Stat The maximum number of indexes for which the Performance Schema maintains statistics. Max Program Instances The maximum number of stored programs for which the Performance Schema maintains statistics. Max Statement Stack The maximum ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-metric-performanceschema-activity-category.html
Index Stat Lost (Delta) The number of indexes for which statistics were lost. Nested Statement Lost (Delta) The number of stored program statements for which statistics were lost. Program Lost (Delta) The number of stored programs for which ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-performance-pages.html
The Performance dashboards are available from the Performance sub-menu of the MySQL Database menu. Graph regions also contain links to week and month overviews of the collected data. Click the appropriate link to display the week or month graph.
https://dev.mysql.com/doc/mysql-monitor/8.0/en/mem-replication-dashboard-ui-ref.html
Binary Log Statistics: graphs the average read/writes per second, log file latency and total space usage. Statistics The Statistics tab graphs the activity of all members of the topology. Important The Max Replication Delay field displays the total ...