WAL segments size - Mailing list pgsql-general

From Bruno Almeida do Lago
Subject WAL segments size
Date
Msg-id 4738a638.1ba77e0a.02b4.33d9@mx.google.com
Whole thread Raw
Responses Re: WAL segments size  (Andrew Sullivan <ajs@crankycanuck.ca>)
Re: WAL segments size  ("Scott Marlowe" <scott.marlowe@gmail.com>)
Re: WAL segments size  (Greg Smith <gsmith@gregsmith.com>)
List pgsql-general
Hi,

One of our PostgreSQL databases is generating archive logs too frequently,
since the number of transactions/s (inserts & updates) is very high.

I was looking for a parameter on postgresql.conf to increase the WAL
segments size, but according to documentation this can only be changed while
building PostgreSQL.

Some questions came up to my mind when I read that:

1. For databases with this kind of behavior (high number of inserts &
updates), wouldn't be better (from the performance point of view) to have
larger WAL segments?

2. Is there a special reason to not allow the WAL size to be changed on
postgresql.conf (version 8.2 or 8.3)?


Best regards,
Bruno Lago


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