On Thu, May 30, 2013 at 3:55 PM, Igor Neyman <iney...@perceptron.com> wrote:
> > > From: Rodrigo Barboza [mailto:rodrigombu...@gmail.com] > Sent: Thursday, May 30, 2013 2:50 PM > To: Igor Neyman > Cc: pgsql-admin@postgresql.org > Subject: Re: [ADMIN] How do I know my table is bloated? > > Well, maybe I am. > But I am worried because I know that there are some tables that do lots of > updates and delete. > As this concept is new for me, I am trying to be prepared to detect a > situation like this. > > ------------------------------------------ > It all depends on pattern of your inserts/updates/deletes. > If your index accumulates lots of almost (but not completely) empty pages > with just few entries left, than - yes, REINDEX "is your friend". > > b.t.w., this concept is not unique to Postgres, it's just a nature of > B-tree indexes. > > Igor > I see... I guess the only way to know is if I suspect that size of my db is growing unexpected. But it is good to know that a b-tree concept concept. Because I came from a very old mysql installation (that is way postgres is new for me) and I am trying to keep my postgres the most stable possible.
