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From: Simon Riggs <simon@2ndQuadrant.com>
To: Scott Whitney <swhitney@journyx.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: Autovac vs manual with analyze
Date: Thu, 18 Mar 2010 09:02:22 +0000
Message-ID: <1268902942.3827.1696.camel@ebony> (raw)
In-Reply-To: <18735708.169861268677235843.JavaMail.root@zimbra.int.journyx.com>
References: <18735708.169861268677235843.JavaMail.root@zimbra.int.journyx.com>

On Mon, 2010-03-15 at 13:20 -0500, Scott Whitney wrote:

> My problem is that each Saturday at midnight, I have to start a
> vacuumdb -f -z -a or my pg_clog dir never clears out.

Why is your pg_clog dir a problem?

> So, my questions are:
> 
> a) Is the manual vacuum needed for performance reasons, or is auto-vac
> sufficient?

If you don't know why you are running it, then you should skip it and
measure the difference. 

-- 
 Simon Riggs           www.2ndQuadrant.com




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