| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Cc: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Free Space Map thoughts |
| Date: | 2007-11-09 00:50:13 |
| Message-ID: | 20071109005013.GC2764@alvh.no-ip.org |
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| Lists: | 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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