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help / color / mirror / Atom feedFrom: Michael Paquier <michael@paquier.xyz>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Add system view pg_stat_kind_info
Date: Thu, 02 Jul 2026 00:34:39 +0000
Message-ID: <E1wf5O4-00111d-0K@gemulon.postgresql.org> (raw)
Add system view pg_stat_kind_info
This commit adds support for pg_stat_kind_info, that exposes at SQL
level data about the statistics kinds registered into a backend:
- Meta-data of a stats kind (built-in or custom, some properties).
- Number of entries, if tracking is enabled.
We have discussed the possibility of more fields (like shared memory
size for a single entry); this adds the minimum agreed on.
This is in spirit similar to pg_get_loaded_modules() for custom stats
kinds, this view providing detailed information about the stats kinds
when registered through shared_preload_libraries.
Bump catalog version.
Author: Tristan Partin <tristan@partin.io>
Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Sami Imseih <samimseih@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/DI6OFGHJ1B69.25YVDEP3BABRH@partin.io
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/3b066de6c0a1dadbd8bed107e55cae659af0598f
Modified Files
--------------
doc/src/sgml/monitoring.sgml | 128 +++++++++++++++++++++
src/backend/catalog/system_views.sql | 11 ++
src/backend/utils/activity/Makefile | 1 +
src/backend/utils/activity/meson.build | 1 +
src/backend/utils/activity/pgstat_kind.c | 72 ++++++++++++
src/include/catalog/catversion.h | 2 +-
src/include/catalog/pg_proc.dat | 8 ++
.../test_custom_stats/t/001_custom_stats.pl | 14 ++-
src/test/regress/expected/rules.out | 8 ++
src/test/regress/expected/stats.out | 23 ++++
src/test/regress/sql/stats.sql | 7 ++
11 files changed, 273 insertions(+), 2 deletions(-)
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Subject: Re: pgsql: Add system view pg_stat_kind_info
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