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 72FD69DD56C for ; Tue, 21 Mar 2006 07:59:12 -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 53207-08 for ; Tue, 21 Mar 2006 07:59:14 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey- Received: from mail.ecircle.de (mail.ecircle.de [195.140.186.200]) by postgresql.org (Postfix) with ESMTP id 55C0A9DD559 for ; Tue, 21 Mar 2006 07:59:10 -0400 (AST) Received: from deimos.muc.ecircle.de (deimos.muc.ecircle.de [192.168.1.4]) by mail.ecircle.de (READY) with ESMTP id 4B90955C017; Tue, 21 Mar 2006 12:59:13 +0100 (CET) Received: from [192.168.1.110] ([192.168.1.110]) by deimos.muc.ecircle.de with Microsoft SMTPSVC(5.0.2195.6713); Tue, 21 Mar 2006 12:59:13 +0100 Subject: Re: Migration study, step 1: bulk write performance From: Csaba Nagy To: "Steinar H. Gunderson" Cc: Mikael Carneholm , postgres performance list In-Reply-To: <20060321115618.GA12880@uio.no> References: <7F10D26ECFA1FB458B89C5B4B0D72C2B088286@sesrv12.wirelesscar.com> <1142867952.16487.96.camel@coppola.muc.ecircle.de> <20060321112759.GF15742@pervasive.com> <1142941966.23597.4.camel@coppola.muc.ecircle.de> <20060321115618.GA12880@uio.no> Content-Type: text/plain Message-Id: <1142942352.23597.8.camel@coppola.muc.ecircle.de> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Tue, 21 Mar 2006 12:59:13 +0100 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 21 Mar 2006 11:59:13.0210 (UTC) FILETIME=[DEDCC9A0:01C64CDE] X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.108 required=5 tests=[AWL=0.108] X-Spam-Score: 0.108 X-Spam-Level: X-Archive-Number: 200603/389 X-Sequence-Number: 17826 > For the record, that's the wrong way round. For the data partitioning > metadata journaling is enough, and for the WAL partition you don't need any > FS journaling at all. Yes, you're right: the data partition shouldn't loose file creation, deletion, etc., which is not important for the WAL partition where the WAL files are mostly recycled... right ? Cheers, Csaba.