Re: Backup causing poor performance - suggestions

From: "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com>
To: "Campbell, Lance" <lance(at)uiuc(dot)edu>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Backup causing poor performance - suggestions
Date: 2008-05-05 15:05:32
Message-ID: dcc563d10805050805t197e9c02ue1a5b09144c6a8f7@mail.gmail.com
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On Mon, May 5, 2008 at 8:59 AM, Campbell, Lance <lance(at)uiuc(dot)edu> wrote:
>
> PostgreSQL: 8.2.4

You should update to 8.2.7 as a matter of periodic maintenance. It's
a very short and easy update.

> We currently backup all of our database tables per schema using pg_dump
> every half hour. We have been noticing that the database performance has
> been very poor during the backup process. How can I improve the
> performance?
>
>
>
> Server Specs:
>
> Dedicated DB server
>
> Database takes up 8.0 Gig of disk space
>
> 2 Xeon 5160 dual cores 3.0
>
> 16 G of memory
>
> Two disks in raid 1 are used for the OS, database and backups. SAS 10,000
> RPM drives.
>
> OS: Linux AS 4.x 64 bit

So, what kind of RAID controller are you using? And can you add more
drives and / or battery backed cache to it?

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