pg_cooldown
pg_cooldown
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 | pgfincore pgcozy pg_prewarm pg_buffercache pg_repack pg_squeeze system_stats pgmeminfo |
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 |
Source
pig build pkg pg_cooldown; # build rpm/debInstall
Make sure PGDG and PIGSTY repo available:
pig repo add pgsql -u # add both repo and update cacheInstall 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 14Create this extension with:
CREATE EXTENSION pg_cooldown;Usage
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');Last updated on