key_cache_age_threshold

Overview

This characterizes the number of hits a hot block has to be untouched until it is considered aged enough to be downgraded to a warm block. This specifies the percentage ratio of that number of hits to the total number of blocks in key cache

See also: System Variables for MariaDB Enterprise Server 10.6, in 10.5 ES, in 10.4 ES, in 10.3 ES, in 10.2 ES, in 10.6 CS, in 10.5 CS, in 10.4 CS, in 10.3 CS, and in 10.2 CS

See also: System Variables for MariaDB Enterprise Server 10.6, in 10.5 ES, and in 10.4 ES

USAGE

DETAILS

SYNONYMS

SCHEMA

PARAMETERS

Command-line

--key_cache_age_threshold=#

Configuration file

Supported

Dynamic

Yes

Scope

Global

Data Type

BIGINT UNSIGNED

Minimum Value

100

Maximum Value

4294967295

Product Default Value

300

SKYSQL

Cloud

SkySQL Topology

ES Ver

Service Default

AWS

Multi-Node Analytics

10.6

300

Single Node Analytics

10.6

300

Replicated Transactions

10.4

300

10.5

300

10.6

300

Single Node Transactions

10.4

300

10.5

300

10.6

300

GCP

Multi-Node Analytics

10.6

300

Single Node Analytics

10.6

300

Replicated Transactions

10.4

300

10.5

300

10.6

300

Single Node Transactions

10.4

300

10.5

300

10.6

300

Cloud

SkySQL Topology

ES Ver

Service Default

AWS

ColumnStore Data Warehouse

10.6

300

Enterprise Server With Replica(s)

10.4

300

10.5

300

10.6

300

Enterprise Server Single Node

10.4

300

10.5

300

10.6

300

GCP

ColumnStore Data Warehouse

10.6

300

Enterprise Server With Replica(s)

10.4

300

10.5

300

10.6

300

Enterprise Server Single Node

10.4

300

10.5

300

10.6

300

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.

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

10.2 Community

  • Present starting in MariaDB Community Server 10.2.0.

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

EXTERNAL REFERENCES