Received: from localhost (unknown [200.46.204.183]) by developer.postgresql.org (Postfix) with ESMTP id 1A8892E002C for ; Wed, 28 May 2008 11:03:06 -0300 (ADT) Received: from developer.postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 19962-05 for ; Wed, 28 May 2008 11:02:44 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by developer.postgresql.org (Postfix) with ESMTP id E290A2E0057 for ; Wed, 28 May 2008 11:02:48 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.2/8.14.2) with ESMTP id m4SE2UPq027531; Wed, 28 May 2008 10:02:31 -0400 (EDT) To: tarcizioab@c3sl.ufpr.br cc: pgsql-performance@postgresql.org Subject: Re: GEQO Benchmark In-reply-to: <55311.200.17.202.126.1211982648.squirrel@webmail.inf.ufpr.br> References: <55311.200.17.202.126.1211982648.squirrel@webmail.inf.ufpr.br> Comments: In-reply-to tarcizioab@c3sl.ufpr.br message dated "Wed, 28 May 2008 10:50:48 -0300" Date: Wed, 28 May 2008 10:02:30 -0400 Message-ID: <27530.1211983350@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200805/354 X-Sequence-Number: 30322 tarcizioab@c3sl.ufpr.br writes: > I'm using the TPC-H Benchmark for testing of performance in PostgreSQL. > But it is composed of only 8 tables, which is not enough to call the GEQO > algorithm. See http://www.postgresql.org/docs/8.3/static/runtime-config-query.html#RUNTIME-CONFIG-QUERY-GEQO particularly geqo_threshold. regards, tom lane