From: Jean-Marc Pigeon <jmp@safe.ca>
Message-Id: <200007140159.VAA17005@new-york.safe.ca>
Subject: Re: vacuum
To: rmager@vgkk.com (Rainer Mager)
Date: Thu, 13 Jul 2000 21:59:29 -0400 (EDT)
Cc: pgsql-admin@postgresql.org
In-Reply-To: <NEBBJBCAFMMNIHGDLFKGOELPCDAA.rmager@vgkk.com> from "Rainer
	Mager" at Jul 14, 2000 10:55:07 AM
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Bonjour Rainer Mager
> 
> Good ideas except I think I wasn't clear. The system is a commercial product
> with numerous individual customers. Each customer is somewhat unique and we
> want to have the system capable of vacuuming automatically for all users.
> 
> The thing is that some users might have systems that are used little in the
> early morning but others might be very different. We would rather not do
> usage statistic gathering/analysis if there was a better way.

	We have the same kind of application here.
	We vacuum according the load, if the load start to be "high"
	we vacuum ->earlier<-, ok there is a little penalty on users, but as soon
	the data-base is clean, the performance is dramaticaly improving
	and the load just drop. So instead to have user penalised
	for a long time, we just use it as a trigger to clean the base.
	(we do not want the user to vacuum at will)

A bientot
==========================================================================
Jean-Marc Pigeon		  Internet:   Jean-Marc.Pigeon@safe.ca
SAFE Inc.		    Phone: (514) 493-4280  Fax: (514) 493-1946
     REGULUS,  a real time accounting/billing package for ISP
        REGULUS' Home base <"http://www.regulus.safe.ca">
==========================================================================