Re: [HACKERS] More detail on settings for pgavd?

Chester Kustarz <chester@arbor.net> writes:
> i have some tables which are insert only. i do not want to vacuum them
> because there are never any dead tuples in them and the vacuum grows the
> indexes.

Those claims cannot both be true.  In any case, plain vacuum cannot grow
the indexes --- only a VACUUM FULL that moves a significant number of
rows could cause index growth.

> vacuum is to reclaim dead tuples. this means it depends on update and
> delete. analyze depends on data values/distribution. this means it depends on
> insert, update, and delete. thus the dependencies are slightly different
> between the 2 operations, an so you can come up with use-cases that
> justify running either more frequently.

Agreed.

            regards, tom lane