Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)

From: Kirill Reshke <reshkekirill(at)gmail(dot)com>
To: Melanie Plageman <melanieplageman(at)gmail(dot)com>
Cc: Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Xuneng Zhou <xunengzhou(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Subject: Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)
Date: 2026-03-17 09:05:16
Message-ID: CALdSSPh9hVXNiPwdntWqbMzu5upKy0jBDDe7Un0_Nf2A54R2VQ@mail.gmail.com
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On Mon, 16 Mar 2026 at 19:53, Melanie Plageman
<melanieplageman(at)gmail(dot)com> wrote:
>
> On Sun, Mar 15, 2026 at 3:10 PM Melanie Plageman
> <melanieplageman(at)gmail(dot)com> wrote:
> >
> > I've pushed a few more of the trivial commits in the set. Attached v38
> > has the remaining patches.
>
> Looks like cfbot wasn't able to rebase v38 on its own for some reason.
> v39 attached.
>
> - Melanie

Hi!

I did take a quick look on v38-v39.

0001 & 0003 looks ok.

> From 788860ded375fcf744201347b9dcbf496070bfb5 Mon Sep 17 00:00:00 2001
> From: Melanie Plageman <melanieplageman(at)gmail(dot)com>
> Date: Wed, 25 Feb 2026 16:48:19 -0500
> Subject: [PATCH v39 02/12] Add pruning fast path for all-visible and
all-frozen pages

For the record, does this work with DISABLE_PAGE_SKIPPING? I think we
don't want the server to "fast-path" in case this option is set by
the user...

--
Best regards,
Kirill Reshke

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