Re: Horribly slow pg_upgrade performance with many Large Objects

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Hannu Krosing <hannuk(at)google(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Horribly slow pg_upgrade performance with many Large Objects
Date: 2025-04-07 21:25:32
Message-ID: 3681760.1744061132@sss.pgh.pa.us
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Hannu Krosing <hannuk(at)google(dot)com> writes:
> I have now met a not insignificant number of cases where pg_upgrade
> performance is really bad when the database has a large number of
> Large Objects.

What version are you testing? We did some work in that area in the
v17 cycle (a45c78e32).

regards, tom lane

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