table_lock_waits_summary_by_table

Overview

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

DETAILS

SCHEMA

CREATE TABLE `table_lock_waits_summary_by_table` (
  `OBJECT_TYPE` varchar(64) DEFAULT NULL COMMENT 'Since this table records waits by table, always set to TABLE.',
  `OBJECT_SCHEMA` varchar(64) DEFAULT NULL COMMENT 'Schema name.',
  `OBJECT_NAME` varchar(64) DEFAULT NULL COMMENT 'Table name.',
  `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_READ_NORMAL, x_READ_WITH_SHARED_LOCKS, x_READ_HIGH_PRIORITY and x_READ_NO_INSERT 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_WRITE_ALLOW_WRITE, x_WRITE_CONCURRENT_INSERT, x_WRITE_DELAYED, x_WRITE_LOW_PRIORITY and x_WRITE_NORMAL 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_READ_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal read normal locks.',
  `SUM_TIMER_READ_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal read normal locks that are timed.',
  `MIN_TIMER_READ_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal read normal locks that are timed.',
  `AVG_TIMER_READ_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal read normal locks that are timed.',
  `MAX_TIMER_READ_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal read normal locks that are timed.',
  `COUNT_READ_WITH_SHARED_LOCKS` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal read with shared locks.',
  `SUM_TIMER_READ_WITH_SHARED_LOCKS` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal read with shared locks that are timed.',
  `MIN_TIMER_READ_WITH_SHARED_LOCKS` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal read with shared locks that are timed.',
  `AVG_TIMER_READ_WITH_SHARED_LOCKS` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal read with shared locks that are timed.',
  `MAX_TIMER_READ_WITH_SHARED_LOCKS` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal read with shared locks that are timed.',
  `COUNT_READ_HIGH_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal read high priority locks.',
  `SUM_TIMER_READ_HIGH_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal read high priority locks that are timed.',
  `MIN_TIMER_READ_HIGH_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal read high priority locks that are timed.',
  `AVG_TIMER_READ_HIGH_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal read high priority locks that are timed.',
  `MAX_TIMER_READ_HIGH_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal read high priority locks that are timed.',
  `COUNT_READ_NO_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal read no insert locks.',
  `SUM_TIMER_READ_NO_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal read no insert locks that are timed.',
  `MIN_TIMER_READ_NO_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal read no insert locks that are timed.',
  `AVG_TIMER_READ_NO_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal read no insert locks that are timed.',
  `MAX_TIMER_READ_NO_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal read no insert locks that are timed.',
  `COUNT_READ_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Number of all external read locks.',
  `SUM_TIMER_READ_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all external read locks that are timed.',
  `MIN_TIMER_READ_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all external read locks that are timed.',
  `AVG_TIMER_READ_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all external read locks that are timed.',
  `MAX_TIMER_READ_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all external read locks that are timed.',
  `COUNT_WRITE_ALLOW_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal read normal locks.',
  `SUM_TIMER_WRITE_ALLOW_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal write allow write locks that are timed.',
  `MIN_TIMER_WRITE_ALLOW_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal write allow write locks that are timed.',
  `AVG_TIMER_WRITE_ALLOW_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal write allow write locks that are timed.',
  `MAX_TIMER_WRITE_ALLOW_WRITE` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal write allow write locks that are timed.',
  `COUNT_WRITE_CONCURRENT_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal concurrent insert write locks.',
  `SUM_TIMER_WRITE_CONCURRENT_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal concurrent insert write locks that are timed.',
  `MIN_TIMER_WRITE_CONCURRENT_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal concurrent insert write locks that are timed.',
  `AVG_TIMER_WRITE_CONCURRENT_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal concurrent insert write locks that are timed.',
  `MAX_TIMER_WRITE_CONCURRENT_INSERT` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal concurrent insert write locks that are timed.',
  `COUNT_WRITE_DELAYED` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal write delayed locks.',
  `SUM_TIMER_WRITE_DELAYED` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal write delayed locks that are timed.',
  `MIN_TIMER_WRITE_DELAYED` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal write delayed locks that are timed.',
  `AVG_TIMER_WRITE_DELAYED` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal write delayed locks that are timed.',
  `MAX_TIMER_WRITE_DELAYED` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal write delayed locks that are timed.',
  `COUNT_WRITE_LOW_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal write low priority locks.',
  `SUM_TIMER_WRITE_LOW_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal write low priority locks that are timed.',
  `MIN_TIMER_WRITE_LOW_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal write low priority locks that are timed.',
  `AVG_TIMER_WRITE_LOW_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal write low priority locks that are timed.',
  `MAX_TIMER_WRITE_LOW_PRIORITY` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal write low priority locks that are timed.',
  `COUNT_WRITE_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Number of all internal write normal locks.',
  `SUM_TIMER_WRITE_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all internal write normal locks that are timed.',
  `MIN_TIMER_WRITE_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all internal write normal locks that are timed.',
  `AVG_TIMER_WRITE_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all internal write normal locks that are timed.',
  `MAX_TIMER_WRITE_NORMAL` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all internal write normal locks that are timed.',
  `COUNT_WRITE_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Number of all external write locks.',
  `SUM_TIMER_WRITE_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Total wait time of all external write locks that are timed.',
  `MIN_TIMER_WRITE_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Minimum wait time of all external write locks that are timed.',
  `AVG_TIMER_WRITE_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Average wait time of all external write locks that are timed.',
  `MAX_TIMER_WRITE_EXTERNAL` bigint(20) unsigned NOT NULL COMMENT 'Maximum wait time of all external write locks 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 Enterprise 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 Enterprise 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 Enterprise 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: ...

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: ...

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

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

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

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

EXTERNAL REFERENCES