THREAD_POOL_GROUPS

This page is part of MariaDB's Documentation.

The parent of this page is: Information Schema for MariaDB Enterprise Server

Topics on this page:

Overview
USAGE
DETAILS
EXAMPLES
ERROR HANDLING
FEATURE INTERACTION
RESPONSES
DIAGNOSIS
ISO 9075:2016
CHANGE HISTORY
RELATED TOPICS
EXTERNAL REFERENCES

Overview

In 10.6 ES, 10.6 CS, 10.5 ES, 10.5 CS:: Provides information about thread pool groups.

In 10.6 ES, 10.5 ES:: Provides information about thread pool groups.

In 10.4 ES, 10.4 CS, 10.3 ES, 10.3 CS, 10.2 ES, 10.2 CS:: Not present

In 10.4 ES:: Not present

USAGE

DETAILS

SYNONYMS

SCHEMA

CREATE TEMPORARY TABLE `THREAD_POOL_GROUPS` (
  `GROUP_ID` int(6) NOT NULL,
  `CONNECTIONS` int(6) NOT NULL,
  `THREADS` int(6) NOT NULL,
  `ACTIVE_THREADS` int(6) NOT NULL,
  `STANDBY_THREADS` int(6) NOT NULL,
  `QUEUE_LENGTH` int(6) NOT NULL,
  `HAS_LISTENER` tinyint(1) NOT NULL,
  `IS_STALLED` tinyint(1) NOT NULL
)

Column Descriptions

Variable	Description
GROUP_ID	There is one row in the table for every thread group, the number of thread groups is determined by the thread_pool_size setting
CONNECTIONS	The client connections currently handled by this thread group
THREADS	The total number of threads in this thread group, sum of active, standby, and listener threads
ACTIVE_THREADS	The number of threads actually executing a query
STANDBY_THREADS	The number of threads in the thread group that are not actually executing a query right now
QUEUE_LENGTH	The number of client query requests still waiting to be assigned to a worker thread
HAS_LISTENER	Checks if there is a dedicated listener thread present in this thread group. The value is always 1 if thread_pool_dedicated_listener is enabled, otherwise a thread groups listener thread may temporarily switch to act as a worker thread
IS_STALLED	Checks whether there is a worker thread in this group that has exceeded thread_pool_stall_limit execution time on a query

PARAMETERS

SKYSQL

PRIVILEGES

EXAMPLES

ERROR HANDLING

FEATURE INTERACTION

RESPONSES

DIAGNOSIS

ISO 9075:2016

CHANGE HISTORY

Release Series	History
10.6 Enterprise	Present starting in MariaDB Enterprise Server 10.6.4-1. Schema changed in MariaDB Enterprise Server 10.6.7-3: ... CREATE TEMPORARY TABLE `THREAD_POOL_GROUPS` ( `GROUP_ID` int(6) NOT NULL DEFAULT 0, `CONNECTIONS` int(6) NOT NULL DEFAULT 0, `THREADS` int(6) NOT NULL DEFAULT 0, `ACTIVE_THREADS` int(6) NOT NULL DEFAULT 0, `STANDBY_THREADS` int(6) NOT NULL DEFAULT 0, `QUEUE_LENGTH` int(6) NOT NULL DEFAULT 0, `HAS_LISTENER` tinyint(1) NOT NULL DEFAULT 0, `IS_STALLED` tinyint(1) NOT NULL DEFAULT 0 )
10.6 Community	Present starting in MariaDB Community Server 10.6.0. Schema changed in MariaDB Community Server 10.6.6: ... CREATE TEMPORARY TABLE `THREAD_POOL_GROUPS` ( `GROUP_ID` int(6) NOT NULL DEFAULT 0, `CONNECTIONS` int(6) NOT NULL DEFAULT 0, `THREADS` int(6) NOT NULL DEFAULT 0, `ACTIVE_THREADS` int(6) NOT NULL DEFAULT 0, `STANDBY_THREADS` int(6) NOT NULL DEFAULT 0, `QUEUE_LENGTH` int(6) NOT NULL DEFAULT 0, `HAS_LISTENER` tinyint(1) NOT NULL DEFAULT 0, `IS_STALLED` tinyint(1) NOT NULL DEFAULT 0 )
10.5 Enterprise	Added in MariaDB Enterprise Server 10.5.3-1. Schema changed in MariaDB Enterprise Server 10.5.15-10: ... CREATE TEMPORARY TABLE `THREAD_POOL_GROUPS` ( `GROUP_ID` int(6) NOT NULL DEFAULT 0, `CONNECTIONS` int(6) NOT NULL DEFAULT 0, `THREADS` int(6) NOT NULL DEFAULT 0, `ACTIVE_THREADS` int(6) NOT NULL DEFAULT 0, `STANDBY_THREADS` int(6) NOT NULL DEFAULT 0, `QUEUE_LENGTH` int(6) NOT NULL DEFAULT 0, `HAS_LISTENER` tinyint(1) NOT NULL DEFAULT 0, `IS_STALLED` tinyint(1) NOT NULL DEFAULT 0 )
10.5 Community	Added in MariaDB Community Server 10.5.0. Schema changed in MariaDB Community Server 10.5.14: ... CREATE TEMPORARY TABLE `THREAD_POOL_GROUPS` ( `GROUP_ID` int(6) NOT NULL DEFAULT 0, `CONNECTIONS` int(6) NOT NULL DEFAULT 0, `THREADS` int(6) NOT NULL DEFAULT 0, `ACTIVE_THREADS` int(6) NOT NULL DEFAULT 0, `STANDBY_THREADS` int(6) NOT NULL DEFAULT 0, `QUEUE_LENGTH` int(6) NOT NULL DEFAULT 0, `HAS_LISTENER` tinyint(1) NOT NULL DEFAULT 0, `IS_STALLED` tinyint(1) NOT NULL DEFAULT 0 )
10.4 Enterprise	Not present.
10.4 Community	Not present.
10.3 Enterprise	Not present.
10.3 Community	Not present.
10.2 Enterprise	Not present.
10.2 Community	Not present.

Release Series	History
10.6 Enterprise	Present starting in MariaDB Enterprise Server 10.6.4-1. Schema changed in MariaDB Enterprise Server 10.6.7-3: ... CREATE TEMPORARY TABLE `THREAD_POOL_GROUPS` ( `GROUP_ID` int(6) NOT NULL DEFAULT 0, `CONNECTIONS` int(6) NOT NULL DEFAULT 0, `THREADS` int(6) NOT NULL DEFAULT 0, `ACTIVE_THREADS` int(6) NOT NULL DEFAULT 0, `STANDBY_THREADS` int(6) NOT NULL DEFAULT 0, `QUEUE_LENGTH` int(6) NOT NULL DEFAULT 0, `HAS_LISTENER` tinyint(1) NOT NULL DEFAULT 0, `IS_STALLED` tinyint(1) NOT NULL DEFAULT 0 )
10.5 Enterprise	Added in MariaDB Enterprise Server 10.5.3-1. Schema changed in MariaDB Enterprise Server 10.5.15-10: ... CREATE TEMPORARY TABLE `THREAD_POOL_GROUPS` ( `GROUP_ID` int(6) NOT NULL DEFAULT 0, `CONNECTIONS` int(6) NOT NULL DEFAULT 0, `THREADS` int(6) NOT NULL DEFAULT 0, `ACTIVE_THREADS` int(6) NOT NULL DEFAULT 0, `STANDBY_THREADS` int(6) NOT NULL DEFAULT 0, `QUEUE_LENGTH` int(6) NOT NULL DEFAULT 0, `HAS_LISTENER` tinyint(1) NOT NULL DEFAULT 0, `IS_STALLED` tinyint(1) NOT NULL DEFAULT 0 )
10.4 Enterprise	Not present.

THREAD_POOL_GROUPS

Overview

USAGE

DETAILS

SYNONYMS

SCHEMA

Column Descriptions

PARAMETERS

SKYSQL

PRIVILEGES

EXAMPLES

ERROR HANDLING

FEATURE INTERACTION

RESPONSES

DIAGNOSIS

ISO 9075:2016

CHANGE HISTORY

RELATED TOPICS

EXTERNAL REFERENCES