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help / color / mirror / Atom feedFrom: Nathan Bossart <[email protected]>
To: Melanie Plageman <[email protected]>
Cc: Pg Hackers <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Peter Geoghegan <[email protected]>
Cc: David Rowley <[email protected]>
Subject: Re: Trigger more frequent autovacuums of heavy insert tables
Date: Wed, 19 Feb 2025 15:59:54 -0600
Message-ID: <Z7ZUWje-e1e_fKeu@nathan> (raw)
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On Wed, Feb 19, 2025 at 04:36:05PM -0500, Melanie Plageman wrote:
> This makes me think I should also not cap relallfrozen when using it
> in relation_needs_vacanalyze(). There I cap it to relallvisible and
> relallvisible is capped to relpages. One of the ideas behind letting
> people modify these stats in pg_class is that they can change a single
> field to see what the effect on their system is, right?
Right. Capping these values to reflect reality seems like it could make
that more difficult.
>> Should we allow manipulating relallfrozen like we do relallvisible? My
>> assumption is that would even be required for the ongoing statistics
>> import/export work.
>
> Why would it be required for the statistics import/export work?
It's probably not strictly required, but my naive expectation would be that
we'd handle relallfrozen just like relallvisible, which appears to be
dumped in the latest stats import/export patch. Is there any reason we
shouldn't do the same for relallfrozen?
--
nathan
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To: [email protected]
Cc: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Subject: Re: Trigger more frequent autovacuums of heavy insert tables
In-Reply-To: <Z7ZUWje-e1e_fKeu@nathan>
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