Re: Autovacuum Improvements

matthew(at)zeut(dot)net ("Matthew O'Connor") writes:

> Bruce Momjian wrote:
>> Yes, I think there are these TODO items. I was waiting to see what
>> additional replies there are before adding them.
>
> Speaking of which, I was just looking at the TODO at:
>
> http://www.postgresql.org/docs/faqs.TODO.html
>
> and I think this item:
>
> * Improve xid wraparound detection by recording per-table rather than
> per-database
>
> is done and working in 8.2 no?

That's in the 8.2 release notes:

- Track maximum XID age within individual tables, instead of whole
databases (Alvaro)

This reduces the overhead involved in preventing transaction ID
wraparound, by avoiding unnecessary VACUUMs.
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