Re: WIP: cross column correlation ...

Alvaro Herrera <alvherre@commandprompt.com>

From: Alvaro Herrera <alvherre@commandprompt.com>

To: Rod Taylor <rod.taylor@gmail.com>

Cc: Robert Haas <robertmhaas@gmail.com>, Bruce Momjian <bruce@momjian.us>, Josh Berkus <josh@agliodbs.com>, PostgreSQL - Hans-Jürgen Schönig <postgres@cybertec.at>, pgsql-hackers Hackers <pgsql-hackers@postgresql.org>, Boszormenyi Zoltan <zb@cybertec.at>

Date: 2011-02-25T19:26:10Z

Lists: pgsql-hackers

Excerpts from Rod Taylor's message of vie feb 25 14:03:58 -0300 2011:

> How practical would it be for analyze to keep a record of response times for
> given sections of a table as it randomly accesses them and generate some
> kind of a map for expected response times for the pieces of data it is
> analysing?

I think what you want is random_page_cost that can be tailored per
tablespace.

-- 
Álvaro Herrera <alvherre@commandprompt.com>
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