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help / color / mirror / Atom feedFrom: Nathan Bossart <[email protected]>
To: Hannu Krosing <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: Horribly slow pg_upgrade performance with many Large Objects
Date: Tue, 8 Jul 2025 16:06:16 -0500
Message-ID: <aG2ISJC__3lQwRqY@nathan> (raw)
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On Sun, Jul 06, 2025 at 02:48:08PM +0200, Hannu Krosing wrote:
> Did a quick check of the patch and it seems to work ok.
Thanks for taking a look.
> What do you think of the idea of not dumping pg_shdepend here, but
> instead adding the required entries after loading
> pg_largeobject_metadata based on the contents of it ?
While not dumping it might save a little space during upgrade, the query
seems to be extremely slow. So, I don't see any strong advantage.
--
nathan
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Subject: Re: Horribly slow pg_upgrade performance with many Large Objects
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