X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (unknown [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id E4D1E5292D for ; Mon, 30 May 2005 01:02:58 -0300 (ADT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 18585-02 for ; Mon, 30 May 2005 04:02:55 +0000 (GMT) Received: from mailbox.samurai.com (mailbox.samurai.com [205.207.28.82]) by svr1.postgresql.org (Postfix) with ESMTP id 5882E528F7 for ; Mon, 30 May 2005 01:02:54 -0300 (ADT) Received: from localhost (mailbox.samurai.com [205.207.28.82]) by mailbox.samurai.com (Postfix) with ESMTP id 16AAD18CDC3; Mon, 30 May 2005 00:02:54 -0400 (EDT) Received: from mailbox.samurai.com ([205.207.28.82]) by localhost (mailbox.samurai.com [205.207.28.82]) (amavisd-new, port 10024) with LMTP id 63648-01; Mon, 30 May 2005 00:02:51 -0400 (EDT) Received: from fjgateway (unknown [61.88.101.19]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (No client certificate requested) by mailbox.samurai.com (Postfix) with ESMTP id 811C318CDC8; Mon, 30 May 2005 00:02:50 -0400 (EDT) Subject: Re: OID vs overall system performances on high load From: Neil Conway To: Eric Lauzon Cc: pgsql-performance@postgresql.org In-Reply-To: References: Content-Type: text/plain Date: Mon, 30 May 2005 14:02:44 +1000 Message-Id: <1117425764.23266.12.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.2.2 Content-Transfer-Encoding: 7bit X-Virus-Scanned: by amavisd-new at mailbox.samurai.com X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.02 tagged_above=0 required=5 tests=AWL X-Spam-Level: X-Archive-Number: 200505/427 X-Sequence-Number: 12591 On Sun, 2005-05-29 at 16:17 -0400, Eric Lauzon wrote: > So OID can be beneficial on static tables OIDs aren't beneficial on "static tables"; unless you have unusual requirements[1], there is no benefit to having OIDs on user-created tables (see the default_with_oids GUC var, which will default to "false" in 8.1) -Neil [1] Such as a column that references a column in the system catalogs.