Heikki Linnakangas wrote:
> 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.

Ok, that explains why I didn't find it when I checked the source - I
checked the 8.1 sources by accident ;-)

Anyway, thanks for pointing that out ;-)

greetings, Florian Pflug

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