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From: Gábor Farkas <gabor@nekomancer.net>
To: Heikki Linnakangas <heikki@enterprisedb.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: select count(*) performance (vacuum did not help)
Date: Mon, 24 Sep 2007 17:14:27 +0200
Message-ID: <46F7D453.4050908@nekomancer.net> (raw)
In-Reply-To: <46F7D2C7.70105@enterprisedb.com>
References: <46F7C494.1050604@nekomancer.net>
	<46F7C9F1.1080805@enterprisedb.com>
	<46F7D207.3000901@nekomancer.net>
	<46F7D2C7.70105@enterprisedb.com>

Heikki Linnakangas wrote:
> Gábor Farkas wrote:
>>
>> if i do a full vacuum to that table only, will the database still serve
>> data from the other tables at a normal speed?
> 
> Yes. The extra I/O load vacuum full generates while it's running might
> disrupt other activity, though.
> 

i see.

will i achieve the same thing by simply dropping that table and 
re-creating it?

gabor



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