| From: | Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com> |
|---|---|
| To: | Lukas Fittl <lukas(at)fittl(dot)com> |
| Cc: | shihao zhong <zhong950419(at)gmail(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Andres Freund <andres(at)anarazel(dot)de>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Ahmed Gouda <gouda0x(at)gmail(dot)com>, Bernd Reiß <bd_reiss(at)gmx(dot)at> |
| Subject: | Re: Fix cumulative WAL statistics double-counting from parallel workers |
| Date: | 2026-11-12 06:53:44 |
| Message-ID: | avVieHO0QJxckw3i@bdtpg |
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| Lists: | pgsql-hackers |
Hi,
On Tue, Nov 10, 2026 at 02:47:56PM -0800, Lukas Fittl wrote:
> I'm leaning towards Bertrand's point to leave this as is, so we match
> what the documentation already says, and clarify in the commit
> message.
Thanks for confirming, and it's also consistent with the per bakend IO and Lock
stats.
> In the future we could invent a mechanism to get aggregated parallel
> worker activity for a given leader PID in a separate statistics kind.
Yeah, that would be a good addition. I haven't thought about it in detail, so
I'm not sure that a separate statistics kind would be the way to go, though.
Regards,
--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com
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