table_io_waits_summary_by_index_usage

Overview

A description for this Performance-schema Table has not yet been added to this Documentation.

See also: Performance Schema in 10.6 ES, in 10.6 CS, in 10.5 ES, in 10.5 CS, in 10.4 ES, in 10.4 CS, in 10.3 ES, in 10.3 CS, in 10.2 ES, and in 10.2 CS

DETAILS

SCHEMA

CREATE TABLE `table_io_waits_summary_by_index_usage` (
  `OBJECT_TYPE` varchar(64) DEFAULT NULL COMMENT 'TABLE in the case of all indexes.',
  `OBJECT_SCHEMA` varchar(64) DEFAULT NULL COMMENT 'Schema name.',
  `OBJECT_NAME` varchar(64) DEFAULT NULL COMMENT 'Table name.',
  `INDEX_NAME` varchar(64) DEFAULT NULL COMMENT 'Index name, or PRIMARY for the primary index, NULL for no index (inserts are counted in this case).',
  `COUNT_STAR` bigint(20) unsigned NOT NULL COMMENT 'Number of summarized events and the sum of the x_READ and x_WRITE columns.',
  `SUM_TIMER_WAIT` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of the summarized events that are timed.',
  `MIN_TIMER_WAIT` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of the summarized events that are timed.',
  `AVG_TIMER_WAIT` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of the summarized events that are timed.',
  `MAX_TIMER_WAIT` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of the summarized events that are timed.',
  `COUNT_READ` bigint(20) unsigned NOT NULL COMMENT 'Number of all read operations, and the sum of the equivalent x_FETCH columns.',
  `SUM_TIMER_READ` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all read operations that are timed.',
  `MIN_TIMER_READ` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all read operations that are timed.',
  `AVG_TIMER_READ` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all read operations that are timed.',
  `MAX_TIMER_READ` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all read operations that are timed.',
  `COUNT_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Number of all write operations, and the sum of the equivalent x_INSERT, x_UPDATE and x_DELETE columns.',
  `SUM_TIMER_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all write operations that are timed.',
  `MIN_TIMER_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all write operations that are timed.',
  `AVG_TIMER_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all write operations that are timed.',
  `MAX_TIMER_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all write operations that are timed.',
  `COUNT_FETCH` bigint(20) unsigned NOT NULL COMMENT 'Number of all fetch operations.',
  `SUM_TIMER_FETCH` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all fetch operations that are timed.',
  `MIN_TIMER_FETCH` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all fetch operations that are timed.',
  `AVG_TIMER_FETCH` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all fetch operations that are timed.',
  `MAX_TIMER_FETCH` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all fetch operations that are timed.',
  `COUNT_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Number of all insert operations.',
  `SUM_TIMER_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all insert operations that are timed.',
  `MIN_TIMER_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all insert operations that are timed.',
  `AVG_TIMER_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all insert operations that are timed.',
  `MAX_TIMER_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all insert operations that are timed.',
  `COUNT_UPDATE` bigint(20) unsigned NOT NULL COMMENT 'Number of all update operations.',
  `SUM_TIMER_UPDATE` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all update operations that are timed.',
  `MIN_TIMER_UPDATE` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all update operations that are timed.',
  `AVG_TIMER_UPDATE` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all update operations that are timed.',
  `MAX_TIMER_UPDATE` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all update operations that are timed.',
  `COUNT_DELETE` bigint(20) unsigned NOT NULL COMMENT 'Number of all delete operations.',
  `SUM_TIMER_DELETE` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all delete operations that are timed.',
  `MIN_TIMER_DELETE` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all delete operations that are timed.',
  `AVG_TIMER_DELETE` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all delete operations that are timed.',
  `MAX_TIMER_DELETE` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all delete operations that are timed.'
)

CHANGE HISTORY

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

  • Schema changed in MariaDB Enterprise Server 10.6.5-2: ...

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

  • Schema changed in MariaDB Community Server 10.6.5: ...

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

  • Schema changed in MariaDB Enterprise Server 10.5.13-9: ...

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

  • Schema changed in MariaDB Community Server 10.5.13: ...

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

  • Schema changed in MariaDB Community Server 10.4.22-14: ...

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

  • Schema changed in MariaDB Community Server 10.4.22: ...

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

  • Schema changed in MariaDB Community Server 10.3.32-14: ...

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

  • Schema changed in MariaDB Community Server 10.3.32: ...

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

  • Schema changed in MariaDB Community Server 10.2.41-14: ...

10.2 Community

  • Present starting in MariaDB Community Server 10.2.0.

  • Schema changed in MariaDB Community Server 10.2.41: ...

EXTERNAL REFERENCES