Re: VACUUM (DISABLE_PAGE_SKIPPING on)

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: VACUUM (DISABLE_PAGE_SKIPPING on)
Date: 2020-11-20 16:02:09
Message-ID: 20201120160209.GA4994@alvherre.pgsql
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On 2020-Nov-20, Robert Haas wrote:

> Yeah, I think dirtying the page fewer times is a big win. However, a
> page may have tuples that are not yet all-visible, and we can't freeze
> those just because we are freezing others.

Of course! We should only freeze tuples that are freezable. I thought
that was obvious :-)

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