Re: Deleting old archived WAL files

From: Jaume Sabater <jsabater(at)linuxsilo(dot)net>
To: pgsql-admin(at)postgresql(dot)org
Subject: Re: Deleting old archived WAL files
Date: 2008-10-31 14:24:09
Message-ID: 21943248.2001225463049735.JavaMail.root@zimbra.linuxsilo.net
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-admin

Jaume Sabater wrote:

> So, should I set the archive_command parameter to any of these?
>
> 1. exit 0
> 2. cp %p /dev/null

Just checked and both worked fine. Did 30000 transactions per 10 concurrent clients with pgbench and the pg_xlog/ folder never went beyond the initial size (files were rotated inside pg_xlog/, none archived, no errors in the PostgreSQL log).

I think I'll stick with the "exit 0" one, as the cp would have to read the file (although it would probably be in the cache of the kernel as it was just written?).

Now on how to change the archive_command in runtime without having to modify the postgresql.conf file, if possible... :P

--
Jaume Sabater
http://linuxsilo.net/

"Ubi sapientas ibi libertas"

In response to

Browse pgsql-admin by date

  From Date Subject
Next Message Isabella Ghiurea 2008-10-31 15:16:49 autovacuum questions
Previous Message Jaume Sabater 2008-10-31 12:12:11 Re: Deleting old archived WAL files