Re: Vacuum, Freeze and Analyze: the big picture - Mailing list pgsql-hackers

> Inhowfar did 8.4 make freezing worse? I can't remember any new problems
> there?

Before the Visibility Map, we always vacuumed all pages in a relation
when it was vacuumed at all.  This means that we froze tuples at
vacuum_min_freeze_age, not at autovacuum_max_freeze_age, which is when
we do it post-8.4.

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com