X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by postgresql.org (Postfix) with ESMTP id D85F29DC83D for ; Mon, 27 Mar 2006 10:25:27 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 69049-10 for ; Mon, 27 Mar 2006 10:25:31 -0400 (AST) Received: from svr4.postgresql.org (svr4.postgresql.org [66.98.251.159]) by postgresql.org (Postfix) with ESMTP id 26E879DC800 for ; Mon, 27 Mar 2006 10:25:25 -0400 (AST) Received: from smtp1.voila.fr (smtp1.voila.fr [193.252.22.174]) by svr4.postgresql.org (Postfix) with ESMTP id 4F57C5AF197 for ; Mon, 27 Mar 2006 14:25:30 +0000 (GMT) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf4009.voila.fr (SMTP Server) with ESMTP id 7F95F6800171 for ; Mon, 27 Mar 2006 16:25:25 +0200 (CEST) Received: from wwinf4002 (wwinf4002 [172.22.157.29]) by mwinf4009.voila.fr (SMTP Server) with ESMTP id 73DA0680016B for ; Mon, 27 Mar 2006 16:25:25 +0200 (CEST) X-ME-UUID: 20060327142525474.73DA0680016B@mwinf4009.voila.fr Message-ID: <16175346.1143469525456.JavaMail.www@wwinf4002> From: luchot Reply-To: luchot@voila.fr To: "pgsql-performance@postgresql.org" Subject: Query parallelism Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_25669_13291368.1143469525454" X-Originating-IP: [129.185.75.10] X-Wum-Nature: EMAIL-NATURE X-WUM-FROM: |~| X-WUM-TO: |~| X-WUM-REPLYTO: |~| Date: Mon, 27 Mar 2006 16:25:25 +0200 (CEST) X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.946 required=5 tests=[HTML_10_20=0.945, HTML_MESSAGE=0.001] X-Spam-Score: 0.946 X-Spam-Level: X-Archive-Number: 200603/520 X-Sequence-Number: 17957 ------=_Part_25669_13291368.1143469525454 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit 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, ------=_Part_25669_13291368.1143469525454 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit

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,

 

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