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From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
To: Job <Job@colliniconsulting.it>
To: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Postgresql 8.4 optimize for heavy select load
Date: Mon, 19 Sep 2016 20:23:18 +1200
Message-ID: <3a4d7d2f-bee4-2c16-0851-626f3b2e052f@catalyst.net.nz> (raw)
In-Reply-To: <88EF58F000EC4B4684700C2AA3A73D7A08054C149843@W2008DC01.ColliniConsulting.lan>
References: <88EF58F000EC4B4684700C2AA3A73D7A08054C149843@W2008DC01.ColliniConsulting.lan>
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On 19/09/16 19:40, Job wrote:

> Hello,
>
> i would please like to have some suggestions to optimize Postgres 8.4 for a very heavy number of select (with join) queries.
> The queries read data, very rarely they write.
>

We probably need to see schema and query examples to help you (with 
EXPLAIN ANALYZE output). Also - err 8.4 - I (and others probably) will 
recommend you upgrade to a more recent (and supported for that matter) 
version - currently 9.5/9.6 - lots of performance improvements you are 
missing out on!

Best wishes

Mark


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