pg_cooldown

remove buffered pages for specific relations

pg_cooldown : remove buffered pages for specific relations

Overview

ID	Extension	Package	Version	Category	License	Language
5070	pg_cooldown	pg_cooldown	`0.1`	ADMIN	Apache-2.0	C

Attribute	Has Binary	Has Library	Need Load	Has DDL	Relocatable	Trusted
--s-d-r	No	Yes	No	Yes	yes	no

Relationships
See Also	pg_buffercache pgfincore pgcozy pg_prewarm

Packages

Type	Repo	Version	PG Major Compatibility	Package Pattern	Dependencies
EXT	PIGSTY	`0.1`	18 17 16 15 14	`pg_cooldown`	-
RPM	PIGSTY	`0.1`	18 17 16 15 14	`pg_cooldown_$v`	-
DEB	PIGSTY	`0.1`	18 17 16 15 14	`postgresql-$v-pg-cooldown`	-

Linux / PG	PG18	PG17	PG16	PG15	PG14
el8.x86_64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
el8.aarch64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
el9.x86_64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
el9.aarch64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
el10.x86_64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
el10.aarch64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
d12.x86_64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
d12.aarch64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
d13.x86_64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
d13.aarch64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
u22.x86_64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
u22.aarch64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
u24.x86_64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
u24.aarch64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
u26.x86_64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1
u26.aarch64	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1	PIGSTY 0.1

Package	Version	OS	ORG	SIZE	File URL
`pg_cooldown_18`	`0.1`	el8.x86_64	pigsty	16.2 KiB	pg_cooldown_18-0.1-1PIGSTY.el8.x86_64.rpm
`pg_cooldown_18`	`0.1`	el8.aarch64	pigsty	16.4 KiB	pg_cooldown_18-0.1-1PIGSTY.el8.aarch64.rpm
`pg_cooldown_18`	`0.1`	el9.x86_64	pigsty	16.0 KiB	pg_cooldown_18-0.1-1PIGSTY.el9.x86_64.rpm
`pg_cooldown_18`	`0.1`	el9.aarch64	pigsty	16.1 KiB	pg_cooldown_18-0.1-1PIGSTY.el9.aarch64.rpm
`pg_cooldown_18`	`0.1`	el10.x86_64	pigsty	16.0 KiB	pg_cooldown_18-0.1-1PIGSTY.el10.x86_64.rpm
`pg_cooldown_18`	`0.1`	el10.aarch64	pigsty	16.2 KiB	pg_cooldown_18-0.1-1PIGSTY.el10.aarch64.rpm
`postgresql-18-pg-cooldown`	`0.1`	d12.x86_64	pigsty	11.9 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~bookworm_amd64.deb
`postgresql-18-pg-cooldown`	`0.1`	d12.aarch64	pigsty	11.9 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~bookworm_arm64.deb
`postgresql-18-pg-cooldown`	`0.1`	d13.x86_64	pigsty	11.9 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~trixie_amd64.deb
`postgresql-18-pg-cooldown`	`0.1`	d13.aarch64	pigsty	12.0 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~trixie_arm64.deb
`postgresql-18-pg-cooldown`	`0.1`	u22.x86_64	pigsty	12.4 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~jammy_amd64.deb
`postgresql-18-pg-cooldown`	`0.1`	u22.aarch64	pigsty	12.4 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~jammy_arm64.deb
`postgresql-18-pg-cooldown`	`0.1`	u24.x86_64	pigsty	12.4 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~noble_amd64.deb
`postgresql-18-pg-cooldown`	`0.1`	u24.aarch64	pigsty	12.3 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~noble_arm64.deb
`postgresql-18-pg-cooldown`	`0.1`	u26.x86_64	pigsty	12.6 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~resolute_amd64.deb
`postgresql-18-pg-cooldown`	`0.1`	u26.aarch64	pigsty	12.5 KiB	postgresql-18-pg-cooldown_0.1-2PIGSTY~resolute_arm64.deb

Package	Version	OS	ORG	SIZE	File URL
`pg_cooldown_17`	`0.1`	el8.x86_64	pigsty	16.2 KiB	pg_cooldown_17-0.1-1PIGSTY.el8.x86_64.rpm
`pg_cooldown_17`	`0.1`	el8.aarch64	pigsty	16.4 KiB	pg_cooldown_17-0.1-1PIGSTY.el8.aarch64.rpm
`pg_cooldown_17`	`0.1`	el9.x86_64	pigsty	16.0 KiB	pg_cooldown_17-0.1-1PIGSTY.el9.x86_64.rpm
`pg_cooldown_17`	`0.1`	el9.aarch64	pigsty	16.1 KiB	pg_cooldown_17-0.1-1PIGSTY.el9.aarch64.rpm
`pg_cooldown_17`	`0.1`	el10.x86_64	pigsty	16.0 KiB	pg_cooldown_17-0.1-1PIGSTY.el10.x86_64.rpm
`pg_cooldown_17`	`0.1`	el10.aarch64	pigsty	16.2 KiB	pg_cooldown_17-0.1-1PIGSTY.el10.aarch64.rpm
`postgresql-17-pg-cooldown`	`0.1`	d12.x86_64	pigsty	11.8 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~bookworm_amd64.deb
`postgresql-17-pg-cooldown`	`0.1`	d12.aarch64	pigsty	11.9 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~bookworm_arm64.deb
`postgresql-17-pg-cooldown`	`0.1`	d13.x86_64	pigsty	11.8 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~trixie_amd64.deb
`postgresql-17-pg-cooldown`	`0.1`	d13.aarch64	pigsty	11.9 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~trixie_arm64.deb
`postgresql-17-pg-cooldown`	`0.1`	u22.x86_64	pigsty	13.2 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~jammy_amd64.deb
`postgresql-17-pg-cooldown`	`0.1`	u22.aarch64	pigsty	13.2 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~jammy_arm64.deb
`postgresql-17-pg-cooldown`	`0.1`	u24.x86_64	pigsty	12.4 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~noble_amd64.deb
`postgresql-17-pg-cooldown`	`0.1`	u24.aarch64	pigsty	12.2 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~noble_arm64.deb
`postgresql-17-pg-cooldown`	`0.1`	u26.x86_64	pigsty	12.6 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~resolute_amd64.deb
`postgresql-17-pg-cooldown`	`0.1`	u26.aarch64	pigsty	12.5 KiB	postgresql-17-pg-cooldown_0.1-2PIGSTY~resolute_arm64.deb

Package	Version	OS	ORG	SIZE	File URL
`pg_cooldown_16`	`0.1`	el8.x86_64	pigsty	16.2 KiB	pg_cooldown_16-0.1-1PIGSTY.el8.x86_64.rpm
`pg_cooldown_16`	`0.1`	el8.aarch64	pigsty	16.4 KiB	pg_cooldown_16-0.1-1PIGSTY.el8.aarch64.rpm
`pg_cooldown_16`	`0.1`	el9.x86_64	pigsty	16.0 KiB	pg_cooldown_16-0.1-1PIGSTY.el9.x86_64.rpm
`pg_cooldown_16`	`0.1`	el9.aarch64	pigsty	16.1 KiB	pg_cooldown_16-0.1-1PIGSTY.el9.aarch64.rpm
`pg_cooldown_16`	`0.1`	el10.x86_64	pigsty	16.0 KiB	pg_cooldown_16-0.1-1PIGSTY.el10.x86_64.rpm
`pg_cooldown_16`	`0.1`	el10.aarch64	pigsty	16.3 KiB	pg_cooldown_16-0.1-1PIGSTY.el10.aarch64.rpm
`postgresql-16-pg-cooldown`	`0.1`	d12.x86_64	pigsty	11.8 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~bookworm_amd64.deb
`postgresql-16-pg-cooldown`	`0.1`	d12.aarch64	pigsty	11.9 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~bookworm_arm64.deb
`postgresql-16-pg-cooldown`	`0.1`	d13.x86_64	pigsty	11.8 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~trixie_amd64.deb
`postgresql-16-pg-cooldown`	`0.1`	d13.aarch64	pigsty	11.9 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~trixie_arm64.deb
`postgresql-16-pg-cooldown`	`0.1`	u22.x86_64	pigsty	13.2 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~jammy_amd64.deb
`postgresql-16-pg-cooldown`	`0.1`	u22.aarch64	pigsty	13.2 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~jammy_arm64.deb
`postgresql-16-pg-cooldown`	`0.1`	u24.x86_64	pigsty	12.4 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~noble_amd64.deb
`postgresql-16-pg-cooldown`	`0.1`	u24.aarch64	pigsty	12.2 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~noble_arm64.deb
`postgresql-16-pg-cooldown`	`0.1`	u26.x86_64	pigsty	12.6 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~resolute_amd64.deb
`postgresql-16-pg-cooldown`	`0.1`	u26.aarch64	pigsty	12.5 KiB	postgresql-16-pg-cooldown_0.1-2PIGSTY~resolute_arm64.deb

Package	Version	OS	ORG	SIZE	File URL
`pg_cooldown_15`	`0.1`	el8.x86_64	pigsty	16.2 KiB	pg_cooldown_15-0.1-1PIGSTY.el8.x86_64.rpm
`pg_cooldown_15`	`0.1`	el8.aarch64	pigsty	16.4 KiB	pg_cooldown_15-0.1-1PIGSTY.el8.aarch64.rpm
`pg_cooldown_15`	`0.1`	el9.x86_64	pigsty	16.1 KiB	pg_cooldown_15-0.1-1PIGSTY.el9.x86_64.rpm
`pg_cooldown_15`	`0.1`	el9.aarch64	pigsty	16.1 KiB	pg_cooldown_15-0.1-1PIGSTY.el9.aarch64.rpm
`pg_cooldown_15`	`0.1`	el10.x86_64	pigsty	16.0 KiB	pg_cooldown_15-0.1-1PIGSTY.el10.x86_64.rpm
`pg_cooldown_15`	`0.1`	el10.aarch64	pigsty	16.3 KiB	pg_cooldown_15-0.1-1PIGSTY.el10.aarch64.rpm
`postgresql-15-pg-cooldown`	`0.1`	d12.x86_64	pigsty	11.8 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~bookworm_amd64.deb
`postgresql-15-pg-cooldown`	`0.1`	d12.aarch64	pigsty	11.9 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~bookworm_arm64.deb
`postgresql-15-pg-cooldown`	`0.1`	d13.x86_64	pigsty	11.8 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~trixie_amd64.deb
`postgresql-15-pg-cooldown`	`0.1`	d13.aarch64	pigsty	12.0 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~trixie_arm64.deb
`postgresql-15-pg-cooldown`	`0.1`	u22.x86_64	pigsty	13.2 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~jammy_amd64.deb
`postgresql-15-pg-cooldown`	`0.1`	u22.aarch64	pigsty	13.2 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~jammy_arm64.deb
`postgresql-15-pg-cooldown`	`0.1`	u24.x86_64	pigsty	12.4 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~noble_amd64.deb
`postgresql-15-pg-cooldown`	`0.1`	u24.aarch64	pigsty	12.2 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~noble_arm64.deb
`postgresql-15-pg-cooldown`	`0.1`	u26.x86_64	pigsty	12.6 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~resolute_amd64.deb
`postgresql-15-pg-cooldown`	`0.1`	u26.aarch64	pigsty	12.5 KiB	postgresql-15-pg-cooldown_0.1-2PIGSTY~resolute_arm64.deb

Package	Version	OS	ORG	SIZE	File URL
`pg_cooldown_14`	`0.1`	el8.x86_64	pigsty	16.2 KiB	pg_cooldown_14-0.1-1PIGSTY.el8.x86_64.rpm
`pg_cooldown_14`	`0.1`	el8.aarch64	pigsty	16.4 KiB	pg_cooldown_14-0.1-1PIGSTY.el8.aarch64.rpm
`pg_cooldown_14`	`0.1`	el9.x86_64	pigsty	16.1 KiB	pg_cooldown_14-0.1-1PIGSTY.el9.x86_64.rpm
`pg_cooldown_14`	`0.1`	el9.aarch64	pigsty	16.1 KiB	pg_cooldown_14-0.1-1PIGSTY.el9.aarch64.rpm
`pg_cooldown_14`	`0.1`	el10.x86_64	pigsty	16.0 KiB	pg_cooldown_14-0.1-1PIGSTY.el10.x86_64.rpm
`pg_cooldown_14`	`0.1`	el10.aarch64	pigsty	16.2 KiB	pg_cooldown_14-0.1-1PIGSTY.el10.aarch64.rpm
`postgresql-14-pg-cooldown`	`0.1`	d12.x86_64	pigsty	11.8 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~bookworm_amd64.deb
`postgresql-14-pg-cooldown`	`0.1`	d12.aarch64	pigsty	11.9 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~bookworm_arm64.deb
`postgresql-14-pg-cooldown`	`0.1`	d13.x86_64	pigsty	11.8 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~trixie_amd64.deb
`postgresql-14-pg-cooldown`	`0.1`	d13.aarch64	pigsty	11.9 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~trixie_arm64.deb
`postgresql-14-pg-cooldown`	`0.1`	u22.x86_64	pigsty	13.1 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~jammy_amd64.deb
`postgresql-14-pg-cooldown`	`0.1`	u22.aarch64	pigsty	13.2 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~jammy_arm64.deb
`postgresql-14-pg-cooldown`	`0.1`	u24.x86_64	pigsty	12.4 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~noble_amd64.deb
`postgresql-14-pg-cooldown`	`0.1`	u24.aarch64	pigsty	12.2 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~noble_arm64.deb
`postgresql-14-pg-cooldown`	`0.1`	u26.x86_64	pigsty	12.6 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~resolute_amd64.deb
`postgresql-14-pg-cooldown`	`0.1`	u26.aarch64	pigsty	12.5 KiB	postgresql-14-pg-cooldown_0.1-2PIGSTY~resolute_arm64.deb

Source

Repository

github.com/rbergm/pg_cooldown

Source Tarball

pg_cooldown-0.1.tar.gz

pig build pkg pg_cooldown;		# build rpm/deb

Install

Make sure PGDG and PIGSTY repo available:

pig repo add pgsql -u   # add both repo and update cache

Install this extension with pig:

pig install pg_cooldown;		# install via package name, for the active PG version

pig install pg_cooldown -v 18;   # install for PG 18
pig install pg_cooldown -v 17;   # install for PG 17
pig install pg_cooldown -v 16;   # install for PG 16
pig install pg_cooldown -v 15;   # install for PG 15
pig install pg_cooldown -v 14;   # install for PG 14

Create this extension with:

CREATE EXTENSION pg_cooldown;

Usage

pg_cooldown: remove buffered pages for specific relations

pg_cooldown is the complement to pg_prewarm: it removes all buffered pages of a specific relation from the shared buffer, useful for simulating cold-start scenarios in research and testing.

Remove Pages from Shared Buffer

-- Remove all data pages of a table
SELECT pg_cooldown('my_relation');

-- Remove pages of a primary key index
SELECT pg_cooldown('my_relation_pkey');

-- Remove pages of any index
SELECT pg_cooldown('my_index_name');