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help / color / mirror / Atom feedFrom: Melanie Plageman <[email protected]>
To: Alexander Lakhin <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Tomas Vondra <[email protected]>
Cc: David Rowley <[email protected]>
Cc: Kirill Reshke <[email protected]>
Cc: Chao Li <[email protected]>
Cc: Andrey Borodin <[email protected]>
Cc: Xuneng Zhou <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Heikki Linnakangas <[email protected]>
Subject: Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)
Date: Tue, 21 Apr 2026 17:37:13 -0400
Message-ID: <CAAKRu_aS3e7-Q+9mO5M5W8_pw-rcAgDHuNzykUSrcHw2JTh74g@mail.gmail.com> (raw)
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On Mon, Apr 20, 2026 at 12:18 PM Melanie Plageman
<[email protected]> wrote:
>
>
> Yes, I think changing it to a temp table is the easiest fix. We could
> also do autovacuum_enabled=false, I think, but making it a temp table
> seems cleanest.
>
> I wonder if we should move the EXPLAIN test above the results queries,
> then throw in a vacuum in between some of them so we exercise btree
> gist as a bitmap heap scan and as an index only scan. It could provide
> a little bit more coverage? Or maybe that isn't actually extra
> coverage. I'm not sure.
I kept it simple and just committed making it a temp table in 62407d26b7c
- Melanie
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Subject: Re: eliminate xl_heap_visible to reduce WAL (and eventually set VM on-access)
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