Horton

Re: Improve pg_stat_statements scalability

Lukas Fittl <lukas@fittl.com>

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From: Lukas Fittl <lukas@fittl.com>
To: Sami Imseih <samimseih@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2026-05-23T01:15:00Z
Lists: pgsql-hackers 
On Thu, May 21, 2026 at 9:38 PM Lukas Fittl <lukas@fittl.com> wrote:
>
> On Mon, May 11, 2026 at 4:54 PM Sami Imseih <samimseih@gmail.com> wrote:
> > pg_stat_statements has well-known scaling problems under
> > high concurrency. This patch series is an initial proposal
> > for how to $SUBJECT.
>
> Agreed. Let's fix this for Postgres 20.
>
> Thank you for putting together initial patches!

For archive's sake and others reading along, we had a productive
discussion about this today at PGConf.Dev.

I've created a new wiki page combining the prior 2025 discussion, and
notes from today:

https://wiki.postgresql.org/wiki/Scalability_of_pg_stat_statements

Thanks,
Lukas

-- 
Lukas Fittl