Re: [PATCHES] Aggressive freezing in lazy-vacuum - Mailing list pgsql-hackers

Florian G. Pflug wrote:
> There could be a GUC vacuum_freeze_limit, and the actual FreezeLimit
> would be calculated as
> GetOldestXmin() - vacuum_freeze_limit

We already have that. It's called vacuum_freeze_min_age, and the default
is 100 million transactions.

IIRC we added it late in the 8.2 release cycle when we changed the clog
truncation point to depend on freeze limit.

--
   Heikki Linnakangas
   EnterpriseDB   http://www.enterprisedb.com