Performance Schema objects_summary_global_by_type Table
It aggregates object wait events, and contains the following columns:
| Column | Description |
|---|---|
OBJECT_TYPE | Groups records together with OBJECT_SCHEMA and OBJECT_NAME. |
OBJECT_SCHEMA | Groups records together with OBJECT_TYPE and OBJECT_NAME. |
OBJECT_NAME | Groups records together with OBJECT_SCHEMA and OBJECT_TYPE. |
COUNT_STAR | Number of summarized events |
SUM_TIMER_WAIT | Total wait time of the summarized events that are timed. |
MIN_TIMER_WAIT | Minimum wait time of the summarized events that are timed. |
AVG_TIMER_WAIT | Average wait time of the summarized events that are timed. |
MAX_TIMER_WAIT | Maximum wait time of the summarized events that are timed. |
You can TRUNCATE the table, which will reset all counters to zero.
Example
SELECT * FROM objects_summary_global_by_type\G
...
*************************** 101. row ***************************
OBJECT_TYPE: TABLE
OBJECT_SCHEMA: test
OBJECT_NAME: v
COUNT_STAR: 0
SUM_TIMER_WAIT: 0
MIN_TIMER_WAIT: 0
AVG_TIMER_WAIT: 0
MAX_TIMER_WAIT: 0
*************************** 102. row ***************************
OBJECT_TYPE: TABLE
OBJECT_SCHEMA: test
OBJECT_NAME: xx2
COUNT_STAR: 2
SUM_TIMER_WAIT: 1621920
MIN_TIMER_WAIT: 481344
AVG_TIMER_WAIT: 810960
MAX_TIMER_WAIT: 1140576
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