Re: Fix pg_stat_get_backend_wait_event() for aux processes

Bertrand Drouvot <bertranddrouvot.pg@gmail.com>

From: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>

To: Heikki Linnakangas <hlinnaka@iki.fi>

Cc: Sami Imseih <samimseih@gmail.com>, Robert Haas <robertmhaas@gmail.com>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>

Date: 2026-02-04T08:02:00Z

Lists: pgsql-hackers

Hi,

On Tue, Feb 03, 2026 at 10:29:27PM +0200, Heikki Linnakangas wrote:
> There might be a performance argument too,

yeah, not sure but with the patch in place the size of PGPROC goes from
832 bytes to 824 bytes. Is it worth to add extra padding so that it still remain
a multiple of 64?

Regards,

-- 
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com

Commits

Fix pg_stat_get_backend_wait_event() for aux processes
- 82b495cdd7ec 14.22 landed
- ebc53ca7b2ff 15.17 landed
- 2332911ae6f4 16.13 landed
- 84247333792c 17.9 landed
- 53463b4b2484 18.3 landed
- 78a5e3074b82 19 (unreleased) landed
doc: Mention possible ephemeral discrepancies in pg_stat_activity
- f056f75dafd0 18.0 cited
Show more processes in pg_stat_activity.
- fc70a4b0df38 10.0 cited