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https://dev.mysql.com/doc/refman/8.0/en/performance-schema-instrument-naming.html
This element also determines which event timer in the performance_timers table applies to the instrument. The TIMED column for the error row in the setup_instruments table is inapplicable because timing information is not collected. Memory ... An ...
https://dev.mysql.com/doc/refman/8.0/en/sys-host-summary.html
statement_latency The total wait time of timed statements for the host. statement_avg_latency The average wait time per timed statement for the host. file_io_latency The total wait time of timed file I/O events for the host. These views summarize ...
https://dev.mysql.com/doc/refman/8.0/en/sys-innodb-lock-waits.html
The innodb_lock_waits and x$innodb_lock_waits views have these columns: wait_started The time at which the lock wait started. wait_age How long the lock has been waited for, as a TIME value. waiting_trx_age How long the waiting transaction has been ... These views summarize the InnoDB locks that transactions are waiting ...
https://dev.mysql.com/doc/refman/8.0/en/sys-user-summary.html
statement_latency The total wait time of timed statements for the user. statement_avg_latency The average wait time per timed statement for the user. file_io_latency The total wait time of timed file I/O events for the user. These views summarize ...
https://dev.mysql.com/doc/refman/8.0/en/sys-waits-by-host-by-latency.html
total_latency The total wait time of timed occurrences of the event for the host. avg_latency The average wait time per timed occurrence of the event for the host. max_latency The maximum single wait time of timed occurrences of the event for the ...
https://dev.mysql.com/doc/refman/8.0/en/sys-waits-by-user-by-latency.html
total_latency The total wait time of timed occurrences of the event for the user. avg_latency The average wait time per timed occurrence of the event for the user. max_latency The maximum single wait time of timed occurrences of the event for the ...
https://dev.mysql.com/doc/refman/8.0/en/sys-waits-global-by-latency.html
total_latency The total wait time of timed occurrences of the event. avg_latency The average wait time per timed occurrence of the event. max_latency The maximum single wait time of timed occurrences of the event. The waits_global_by_latency and ...
https://dev.mysql.com/doc/refman/8.0/en/replication-threads-monitor-worker.html
The message lists the following statistics for the relevant replication channel, or the default replication channel (which is not named): Seconds elapsed The difference in seconds between the current time and the last time this information was ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statements-with-sorting.html
total_latency The total wait time of timed occurrences of the statement. last_seen The time at which the statement was most recently seen. The statements_with_sorting and x$statements_with_sorting views have these columns: query The normalized ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statements-with-temp-tables.html
total_latency The total wait time of timed occurrences of the statement. last_seen The time at which the statement was most recently seen. These views list normalized statements that have used temporary tables. By default, rows are sorted by ...