pg.ddx.io  pgsql-committers@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Masahiko Sawada <msawada@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Add mem_exceeded_count column to pg_stat_replication_slots.
Date: Wed, 08 Oct 2025 17:05:21 +0000
Message-ID: <E1v6XbN-000hqZ-1q@gemulon.postgresql.org> (raw)

Add mem_exceeded_count column to pg_stat_replication_slots.

This commit introduces a new column mem_exceeded_count to the
pg_stat_replication_slots view. This counter tracks how often the
memory used by logical decoding exceeds the logical_decoding_work_mem
limit. The new statistic helps users determine whether exceeding the
logical_decoding_work_mem limit is a rare occurrences or a frequent
issue, information that wasn't available through existing statistics.

Bumps catversion.

Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: shveta malik <shveta.malik@gmail.com>
Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://postgr.es/m/978D21E8-9D3B-40EA-A4B1-F87BABE7868C@yesql.se

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/d3b6183dd988928dd369b4b7d641917e77f1ae4e

Modified Files
--------------
contrib/test_decoding/expected/stats.out        | 71 +++++++++++++------------
contrib/test_decoding/sql/stats.sql             | 13 +++--
doc/src/sgml/monitoring.sgml                    | 11 ++++
src/backend/catalog/system_views.sql            |  1 +
src/backend/replication/logical/logical.c       |  8 ++-
src/backend/replication/logical/reorderbuffer.c | 34 +++++++++---
src/backend/utils/activity/pgstat_replslot.c    |  1 +
src/backend/utils/adt/pgstatfuncs.c             | 19 ++++---
src/include/catalog/catversion.h                |  2 +-
src/include/catalog/pg_proc.dat                 |  6 +--
src/include/pgstat.h                            |  1 +
src/include/replication/reorderbuffer.h         |  3 ++
src/test/regress/expected/rules.out             |  3 +-
13 files changed, 113 insertions(+), 60 deletions(-)



view thread (3+ messages)  latest in thread

Message-ID: <E1v6XbN-000hqZ-1q@gemulon.postgresql.org>
Permalink:  ../E1v6XbN-000hqZ-1q@gemulon.postgresql.org/
Also on:    postgresql.org/message-id/E1v6XbN-000hqZ-1q@gemulon.postgresql.org

 · 

reply
Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-committers@postgresql.org
  Cc: msawada@postgresql.org, pgsql-committers@lists.postgresql.org
  Subject: Re: pgsql: Add mem_exceeded_count column to pg_stat_replication_slots.
  In-Reply-To: <E1v6XbN-000hqZ-1q@gemulon.postgresql.org>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox