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MySQL 5.7 Reference Manual
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23.9.5.2 The events_stages_history Table

The events_stages_history table contains the most recent N stage events per thread. The value of N is autosized at server startup. To set the table size explicitly, set the performance_schema_events_stages_history_size system variable at server startup. Stage events are not added to the table until they have ended. As new events are added, older events are discarded if the table is full.

The events_stages_history table has the same structure as events_stages_current. See Section 23.9.5.1, “The events_stages_current Table”.

The events_stages_history table can be truncated with TRUNCATE TABLE.

For information about configuration of stage event collection, see Section 23.9.5, “Performance Schema Stage Event Tables”.


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