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help / color / mirror / Atom feedFrom: Heikki Linnakangas <[email protected]>
To: [email protected]
Subject: pgsql: Fix pg_stat_get_backend_wait_event() for aux processes
Date: Wed, 11 Feb 2026 17:00:27 +0000
Message-ID: <[email protected]> (raw)
Fix pg_stat_get_backend_wait_event() for aux processes
The pg_stat_activity view shows information for aux processes, but the
pg_stat_get_backend_wait_event() and
pg_stat_get_backend_wait_event_type() functions did not. To fix, call
AuxiliaryPidGetProc(pid) if BackendPidGetProc(pid) returns NULL, like
we do in pg_stat_get_activity().
In version 17 and above, it's a little silly to use those functions
when we already have the ProcNumber at hand, but it was necessary
before v17 because the backend ID was different from ProcNumber. I
have other plans for wait_event_info on master, so it doesn't seem
worth applying a different fix on different versions now.
Reviewed-by: Sami Imseih <[email protected]>
Reviewed-by: Chao Li <[email protected]>
Reviewed-by: Kyotaro Horiguchi <[email protected]>
Discussion: https://www.postgresql.org/message-id/[email protected]
Backpatch-through: 14
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/78a5e3074b824b4bbcb75ea4dd565ce735f54293
Modified Files
--------------
src/backend/utils/adt/pgstatfuncs.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
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Subject: Re: pgsql: Fix pg_stat_get_backend_wait_event() for aux processes
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