| From: | Alvaro Herrera <alvherre(at)dcc(dot)uchile(dot)cl> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Clustering system catalog indexes |
| Date: | 2004-05-20 02:02:17 |
| Message-ID: | 20040520020217.GA13544@dcc.uchile.cl |
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| Lists: | pgsql-hackers |
On Wed, May 19, 2004 at 09:43:22PM -0400, Bruce Momjian wrote:
> Christopher Kings-Lynne wrote:
> > Is it worth us marking any system catalog indexes as clusterable by
> > default for performance?
>
> Not sure. Most of the system stuff is loaded in a pretty good order, and
> cluster is only good if you are going after seveal rows of identical
> value or similar value in the same table, and I can't think of a case
> where this would help. Can others? It is a good question.
pg_attribute maybe?
--
Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
"Cómo ponemos nuestros dedos en la arcilla del otro. Eso es la amistad; jugar
al alfarero y ver qué formas se pueden sacar del otro" (C. Halloway en
La Feria de las Tinieblas, R. Bradbury)
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