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help / color / mirror / Atom feedFrom: Tomas Vondra <tomas.vondra@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Add EXPLAIN (IO) instrumentation for SeqScan
Date: Tue, 07 Apr 2026 21:07:37 +0000
Message-ID: <E1wADe4-003S8t-3C@gemulon.postgresql.org> (raw)
Add EXPLAIN (IO) instrumentation for SeqScan
Adds support for EXPLAIN (IO) instrumentation for sequential scans. This
requires adding shared instrumentation, using the separate DSM approach
introduced by dd78e69cfc33.
Author: Tomas Vondra <tomas@vondra.me>
Reviewed-by: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Lukas Fittl <lukas@fittl.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/flat/a177a6dd-240b-455a-8f25-aca0b1c08c6e%40vondra.me
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/3b1117d6e2e47d86cdbd978b79434c630cb0ef52
Modified Files
--------------
src/backend/commands/explain.c | 25 +++++++
src/backend/executor/execParallel.c | 11 +++
src/backend/executor/nodeSeqscan.c | 133 ++++++++++++++++++++++++++++++---
src/include/executor/instrument_node.h | 19 +++++
src/include/executor/nodeSeqscan.h | 9 +++
src/include/nodes/execnodes.h | 1 +
src/test/regress/expected/explain.out | 18 ++++-
src/test/regress/sql/explain.sql | 4 +-
src/tools/pgindent/typedefs.list | 2 +
9 files changed, 209 insertions(+), 13 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: tomas.vondra@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Add EXPLAIN (IO) instrumentation for SeqScan
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