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Re: Query parallelism

From: "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>
To: luchot <luchot(at)voila(dot)fr>
Cc: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Query parallelism
Date: 2006-03-27 14:31:48
Message-ID: 20060327143147.GU80726@pervasive.com (view raw or flat)
Thread:
Lists: pgsql-performance
On Mon, Mar 27, 2006 at 04:25:25PM +0200, luchot wrote:
> Hello everybody ,
> I use PostgreSQL 8.1.3 on a bi-processor Xeon and I would know how to do to enable a parallelism for 
> the execution of  queries. Indeed , when I analyse the use of the cpus during a query the result is that for 
> some minutes a cpu is used while the other not and after it is the contrary. So they are not used at the same 
> time and i would know what i have to do in order cpus work together .
> Thanks and sorry for my english,

PostgreSQL has no support for intra-query parallelism at this time.
Greenplum's MPP might do what you're looking for.
-- 
Jim C. Nasby, Sr. Engineering Consultant      jnasby(at)pervasive(dot)com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461

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