From owner-freebsd-performance@FreeBSD.ORG Tue Jul 22 08:37:49 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D187A37B40D; Tue, 22 Jul 2003 08:37:49 -0700 (PDT) Received: from bast.unixathome.org (bast.unixathome.org [66.11.174.150]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4330C43F85; Tue, 22 Jul 2003 08:37:49 -0700 (PDT) (envelope-from dan@langille.org) Received: from wocker (wocker.unixathome.org [192.168.0.99]) by bast.unixathome.org (Postfix) with ESMTP id EE7203D29; Tue, 22 Jul 2003 11:37:44 -0400 (EDT) From: "Dan Langille" To: Jason Stone Date: Tue, 22 Jul 2003 11:37:44 -0400 MIME-Version: 1.0 Message-ID: <3F1D2208.2124.52B03E6A@localhost> Priority: normal References: <20030721192645.GB61464@perrin.int.nxad.com> In-reply-to: <20030721202338.C14379-100000@walter> X-mailer: Pegasus Mail for Windows (v4.02a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Content-description: Mail message body cc: freebsd-database@freebsd.org cc: freebsd-performance@freebsd.org Subject: Re: Tuning for PostGreSQL Database X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Jul 2003 15:37:50 -0000 On 21 Jul 2003 at 20:35, Jason Stone wrote: > I feel like this is an extremely important point. If softupdates changes > the semantics of sync(2)/fsync(2), then it absolutely has to be off for a > postgresql server because postgresql counts on fsync in order to make its > durability guarantees. If this means all FreeBSD-PostgreSQL users need to change their setup, we need to do something ASAP. I'd first recommend getting the confirmation from the PostgreSQL team, then adjusting the PostgreSQL documenation and the FreeBSD port. Does anyone feel this is urgent enough that they'll do something about it? -- Dan Langille : http://www.langille.org/