Re: How do I know my table is bloated?
| От | Rodrigo Barboza |
|---|---|
| Тема | Re: How do I know my table is bloated? |
| Дата | |
| Msg-id | CANs8QJZLBu1yUTeW=jm28A2b5U-rv+D5tWFrmnJ=bQAmtT3+5w@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: How do I know my table is bloated? (Igor Neyman <ineyman@perceptron.com>) |
| Список | pgsql-admin |
On Thu, May 30, 2013 at 3:55 PM, Igor Neyman <ineyman@perceptron.com> wrote:
Sent: Thursday, May 30, 2013 2:50 PMTo: 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.
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