powa
powa
powa : PostgreSQL Workload Analyser-core
Overview
| ID | Extension | Package | Version | Category | License | Language |
|---|---|---|---|---|---|---|
| 6870 | powa | powa | 5.1.1 | STAT | PostgreSQL | Python |
| Attribute | Has Binary | Has Library | Need Load | Has DDL | Relocatable | Trusted |
|---|---|---|---|---|---|---|
--s-d-- | No | Yes | No | Yes | no | no |
| Relationships | |
|---|---|
| Schemas | public |
| Requires | plpgsql pg_stat_statements btree_gist |
| See Also | pg_stat_kcache pg_qualstats pg_wait_sampling hypopg plprofiler pg_profile pg_track_settings btree_gin |
pgdg missing el10.pg17
Packages
| Type | Repo | Version | PG Major Compatibility | Package Pattern | Dependencies |
|---|---|---|---|---|---|
| EXT | PGDG | 5.1.1 | 18 17 16 15 14 | powa | plpgsql, pg_stat_statements, btree_gist |
| RPM | PGDG | 5.1.0 | 18 17 16 15 14 | powa_$v | - |
| DEB | PGDG | 5.1.1 | 18 17 16 15 14 | postgresql-$v-powa | - |
| Linux / PG | PG18 | PG17 | PG16 | PG15 | PG14 |
|---|---|---|---|---|---|
el8.x86_64 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 |
el8.aarch64 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 |
el9.x86_64 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 |
el9.aarch64 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 |
el10.x86_64 | PGDG 5.1.0 | MISS | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 |
el10.aarch64 | PGDG 5.1.0 | MISS | PGDG 5.1.0 | PGDG 5.1.0 | PGDG 5.1.0 |
d12.x86_64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
d12.aarch64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
d13.x86_64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
d13.aarch64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
u22.x86_64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
u22.aarch64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
u24.x86_64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
u24.aarch64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
u26.x86_64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
u26.aarch64 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 | PGDG 5.1.1 |
Source
Install
Make sure PGDG repo available:
pig repo add pgdg -u # add pgdg repo and update cacheInstall this extension with pig:
pig install powa; # install via package name, for the active PG version
pig install powa -v 18; # install for PG 18
pig install powa -v 17; # install for PG 17
pig install powa -v 16; # install for PG 16
pig install powa -v 15; # install for PG 15
pig install powa -v 14; # install for PG 14Create this extension with:
CREATE EXTENSION powa CASCADE; -- requires plpgsql, pg_stat_statements, btree_gistUsage
PoWA is a workload analysis framework that collects performance statistics and provides real-time charts through a web UI. The core extension (powa-archivist) snapshots statistics from multiple stat extensions.
Architecture
PoWA consists of several components:
- powa-archivist: The PostgreSQL extension that collects and stores statistics
- powa-web: A web UI for visualizing performance data
- pg_stat_statements: Required for query statistics
- pg_qualstats: Optional, provides predicate statistics and index suggestions
- pg_stat_kcache: Optional, provides OS-level metrics (CPU, I/O)
- pg_wait_sampling: Optional, provides wait event sampling
Taking Snapshots
PoWA periodically snapshots statistics from all registered extensions:
-- Manual snapshot
SELECT powa_take_snapshot();
-- Check snapshot status
SELECT * FROM powa_snapshot_metas;Configuration
-- Register stat extensions (done automatically on CREATE EXTENSION)
SELECT powa_register_server(hostname => 'localhost', port => 5432);
-- Configure snapshot interval and retention
ALTER EXTENSION powa UPDATE;Key Tables and Views
-- View collected query statistics
SELECT * FROM powa_statements;
-- View snapshot history
SELECT * FROM powa_snapshot_metas;Web UI
The PoWA web interface (installed separately) provides:
- Real-time query performance dashboards
- Per-query drill-down with plan details
- Index suggestions based on
pg_qualstats - Wait event analysis
- System resource usage graphs
Documentation: powa.readthedocs.io
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