Performance Schema events_stages_summary_global_by_event_name Table

This table summarizes stage events aggregated by the client host and the event name, allowing performance analysis per host.

The table lists stage events, summarized by thread and event name.

It contains the following columns:

Column	Description
EVENT_NAME	Event name.
COUNT_STAR	Number of summarized events, which includes all timed and untimed events.
SUM_TIMER_WAIT	Total wait time of the timed summarized events.
MIN_TIMER_WAIT	Minimum wait time of the timed summarized events.
AVG_TIMER_WAIT	Average wait time of the timed summarized events.
MAX_TIMER_WAIT	Maximum wait time of the timed summarized events.

Example

SELECT * FROM events_stages_summary_global_by_event_name\G
...
*************************** 106. row ***************************
    EVENT_NAME: stage/sql/Waiting for trigger metadata lock
    COUNT_STAR: 0
SUM_TIMER_WAIT: 0
MIN_TIMER_WAIT: 0
AVG_TIMER_WAIT: 0
MAX_TIMER_WAIT: 0
*************************** 107. row ***************************
    EVENT_NAME: stage/sql/Waiting for event metadata lock
    COUNT_STAR: 0
SUM_TIMER_WAIT: 0
MIN_TIMER_WAIT: 0
AVG_TIMER_WAIT: 0
MAX_TIMER_WAIT: 0
*************************** 108. row ***************************
    EVENT_NAME: stage/sql/Waiting for commit lock
    COUNT_STAR: 0
SUM_TIMER_WAIT: 0
MIN_TIMER_WAIT: 0
AVG_TIMER_WAIT: 0
MAX_TIMER_WAIT: 0
*************************** 109. row ***************************
    EVENT_NAME: stage/aria/Waiting for a resource
    COUNT_STAR: 0
SUM_TIMER_WAIT: 0
MIN_TIMER_WAIT: 0
AVG_TIMER_WAIT: 0
MAX_TIMER_WAIT: 0

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