Re: [WIP] cache estimates, cache access cost

Alvaro Herrera <alvherre@commandprompt.com> writes:
> Excerpts from Cédric Villemain's message of mar jun 14 10:29:36 -0400 2011:
>> 0001-Add-reloscache-column-to-pg_class.patch

> Hmm, do you really need this to be a new column?  Would it work to have
> it be a reloption?

If it's to be updated in the same way as ANALYZE updates reltuples and
relpages (ie, an in-place non-transactional update), I think it'll have
to be a real column.
        regards, tom lane