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[#2452] Improve postgresl indexes on hosts table

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src/share/database/scripts/pgsql/dhcpdb_create.pgsql
src/share/database/scripts/pgsql/upgrade_012_to_013.sh.in
    Added host index for dhcp identifier + type only - v4 and v6
    Modified existing host index to include subnet-id = 0 - v4 and v6
This commit is contained in:
Thomas Markwalder
2022-07-20 11:53:27 -04:00
parent 9e6740b5c1
commit b0c3dda963
2 changed files with 36 additions and 0 deletions
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18
src/share/database/scripts/pgsql/dhcpdb_create.pgsql
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@@ -5604,6 +5604,24 @@ BEGIN
END; END;
$$ LANGUAGE plpgsql; $$ LANGUAGE plpgsql;
-- Improve hosts indexes for better performance of global reservations
-- Create new index that uses only dhcp4_identifier.
CREATE INDEX key_dhcp4_identifier on hosts (dhcp_identifier, dhcp_identifier_type);
-- Create new index that uses only dhcp4_identifier.
CREATE INDEX key_dhcp6_identifier on hosts (dhcp_identifier, dhcp_identifier_type);
-- Modify existing indexes to include subnet_id values of 0, so index is also used
-- for global reservations.
DROP INDEX key_dhcp4_identifier_subnet_id;
CREATE UNIQUE INDEX key_dhcp4_identifier_subnet_id ON hosts
(dhcp_identifier ASC, dhcp_identifier_type ASC, dhcp4_subnet_id ASC)
WHERE (dhcp4_subnet_id IS NOT NULL);
DROP INDEX key_dhcp6_identifier_subnet_id;
CREATE UNIQUE INDEX key_dhcp6_identifier_subnet_id ON hosts
(dhcp_identifier ASC, dhcp_identifier_type ASC, dhcp6_subnet_id ASC)
WHERE (dhcp6_subnet_id IS NOT NULL);
-- Update the schema version number. -- Update the schema version number.
UPDATE schema_version UPDATE schema_version
SET version = '13', minor = '0'; SET version = '13', minor = '0';

18
src/share/database/scripts/pgsql/upgrade_012_to_013.sh.in
View File

@@ -653,6 +653,24 @@ BEGIN
END; END;
\$\$ LANGUAGE plpgsql; \$\$ LANGUAGE plpgsql;
-- Improve hosts indexes for better performance of global reservations
-- Create new index that uses only dhcp4_identifier.
CREATE INDEX key_dhcp4_identifier on hosts (dhcp_identifier, dhcp_identifier_type);
-- Create new index that uses only dhcp4_identifier.
CREATE INDEX key_dhcp6_identifier on hosts (dhcp_identifier, dhcp_identifier_type);
-- Modify existing indexes to include subnet_id values of 0, so index is also used
-- for global reservations.
DROP INDEX IF EXISTS key_dhcp4_identifier_subnet_id;
CREATE UNIQUE INDEX key_dhcp4_identifier_subnet_id ON hosts
(dhcp_identifier ASC, dhcp_identifier_type ASC, dhcp4_subnet_id ASC)
WHERE (dhcp4_subnet_id IS NOT NULL);
DROP INDEX IF EXISTS key_dhcp6_identifier_subnet_id;
CREATE UNIQUE INDEX key_dhcp6_identifier_subnet_id ON hosts
(dhcp_identifier ASC, dhcp_identifier_type ASC, dhcp6_subnet_id ASC)
WHERE (dhcp6_subnet_id IS NOT NULL);
-- Update the schema version number. -- Update the schema version number.
UPDATE schema_version UPDATE schema_version
SET version = '13', minor = '0'; SET version = '13', minor = '0';