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help / color / mirror / Atom feedFrom: Peter Geoghegan <[email protected]>
To: Heikki Linnakangas <[email protected]>
Cc: Pavel Luzanov <[email protected]>
Cc: Melanie Plageman <[email protected]>
Cc: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: PG17 optimizations to vacuum
Date: Mon, 2 Sep 2024 17:01:54 -0400
Message-ID: <CAH2-Wzm7b-dJB7VChcdUZR9Mm6Wa5uY1k_2-h5U60XTUYdsF=w@mail.gmail.com> (raw)
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On Mon, Sep 2, 2024 at 4:58 PM Heikki Linnakangas <[email protected]> wrote:
> Do you have any non-default settings? "select name,
> current_setting(name), source from pg_settings where setting <>
> boot_val;" would show that.
What about page checksums?
One simple explanation is that we're writing extra FPIs to set hint
bits. But that explanation only works if you assume that page-level
checksums are in use (or that wal_log_hints is turned on).
--
Peter Geoghegan
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Subject: Re: PG17 optimizations to vacuum
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