agora inbox for pgsql-committers@postgresql.org
help / color / mirror / Atom feedFrom: Fujii Masao <fujii@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Restrict pg_stat_io entries for data checksum processes
Date: Fri, 17 Jul 2026 11:18:25 +0000
Message-ID: <E1wkgaH-000boV-04@gemulon.postgresql.org> (raw)
Restrict pg_stat_io entries for data checksum processes
The data checksums launcher and workers were exposed in pg_stat_io
with the same broad set of object/context combinations as general
background workers. However, several of those entries can never
accumulate I/O statistics for these processes, such as bulkwrite,
relation init, temporary relation, and launcher vacuum entries.
Teach pgstat_tracks_io_object() and pgstat_tracks_io_op() about the
actual I/O performed by the data checksum processes. Keep the entries
needed for catalog scans, including bulkread catalog scans, worker
relation processing with a vacuum access strategy, and WAL writes and
initialization, while excluding WAL reads and other object/context
combinations that can never be used.
Author: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/CAHGQGwHz_-nt+YkHDMRZNBZrnoHro8cMOgSwuXEmSYT6vxgQ=w@mail.gmail.com
Backpatch-through: 19
Branch
------
REL_19_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/3aa54433b0cdce48facb610a5b720208cc760654
Modified Files
--------------
src/backend/utils/activity/pgstat_io.c | 33 +++++++++++++++++++++++++++++++++
src/test/regress/expected/stats.out | 9 +--------
2 files changed, 34 insertions(+), 8 deletions(-)
view thread (2+ messages)
Message-ID: <E1wkgaH-000boV-04@gemulon.postgresql.org>
Permalink: ../E1wkgaH-000boV-04@gemulon.postgresql.org/
Also on: postgresql.org/message-id/E1wkgaH-000boV-04@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: fujii@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Restrict pg_stat_io entries for data checksum processes
In-Reply-To: <E1wkgaH-000boV-04@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 agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox