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 C10AE528CF for ; Wed, 27 Jul 2005 21:41:31 -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 74222-08 for ; Thu, 28 Jul 2005 00:41:23 +0000 (GMT) Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by svr1.postgresql.org (Postfix) with ESMTP id 9106F528E4 for ; Wed, 27 Jul 2005 21:41:22 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.13.1/8.13.1) with ESMTP id j6S0f5ge013605; Wed, 27 Jul 2005 20:41:05 -0400 (EDT) To: Josh Berkus Cc: pgsql-performance@postgresql.org, "Luke Lonergan" , "Hannu Krosing" , "John A Meinel" , "Dan Harris" , "bizgres-general" Subject: Re: [Bizgres-general] Re: faster INSERT with possible In-reply-to: <200507270929.10251.josh@agliodbs.com> References: <200507270929.10251.josh@agliodbs.com> Comments: In-reply-to Josh Berkus message dated "Wed, 27 Jul 2005 09:29:09 -0700" Date: Wed, 27 Jul 2005 20:41:05 -0400 Message-ID: <13604.1122511265@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.006 tagged_above=0 required=5 tests=AWL X-Spam-Level: X-Archive-Number: 200507/425 X-Sequence-Number: 13666 Josh Berkus writes: > RIght. The problem is bypassing WAL for loading new "scratch" tables which > aren't TEMPORARY tables. We need to do this for multi-threaded ETL, since: > a) Temp tables can't be shared by several writers, and > b) you can't index a temp table. This may not matter given point (a), but: point (b) is completely wrong. regards, tom lane