Re: Free Space Map thoughts - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: Free Space Map thoughts
Date
Msg-id 20071109005013.GC2764@alvh.no-ip.org
Whole thread Raw
In response to Re: Free Space Map thoughts  (Simon Riggs <simon@2ndquadrant.com>)
Responses Re: Free Space Map thoughts  (Heikki Linnakangas <heikki@enterprisedb.com>)
Re: Free Space Map thoughts  (Simon Riggs <simon@2ndquadrant.com>)
List pgsql-hackers
Simon Riggs wrote:

> Presumably we would not store an FSM for small tables? On the basis that
> the purpose of the FSM is to save on pointless I/O there must be a size
> of table below which an FSM is just overhead.

Hmm, do you mean that we would open and verify every page of a small
relation until we find one with free space?  That doesn't sound very
good.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.


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