Message-ID: <d93ba90d8bb7e0666c4d23e2478485189c14965a.camel@cybertec.at>
Subject: Re: pg_upgrade failing for 200+ million Large Objects
From: Laurenz Albe <laurenz.albe@cybertec.at>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Nathan Bossart <nathandbossart@gmail.com>, vignesh C
 <vignesh21@gmail.com>,  "Kumar, Sachin" <ssetiya@amazon.com>, Robins
 Tharakan <tharakan@gmail.com>, Jan Wieck <jan@wi3ck.info>, Bruce Momjian
 <bruce@momjian.us>, Andrew Dunstan <andrew@dunslane.net>, Magnus Hagander
 <magnus@hagander.net>, Peter Eisentraut
 <peter.eisentraut@enterprisedb.com>,  "pgsql-hackers@postgresql.org"
 <pgsql-hackers@postgresql.org>
Date: Sun, 17 Mar 2024 18:57:45 +0100
In-Reply-To: <3023817.1710629175@sss.pgh.pa.us>
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Precedence: bulk

On Sat, 2024-03-16 at 18:46 -0400, Tom Lane wrote:
> > Without the patch:
> > Runtime: 74.5 minutes
>=20
> > With the patch:
> > Runtime: 70 minutes
>=20
> Hm, I'd have hoped for a bit more runtime improvement.

I did a second run with the patch, and that finished in 66 minutes,
so there is some jitter there.

I think the reduced memory footprint and the reduced transaction ID
consumption alone make this patch worthwhile.

Yours,
Laurenz Albe