From owner-freebsd-stable@FreeBSD.ORG Mon Aug 23 18:46:45 2004 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6C41D16A4CE for ; Mon, 23 Aug 2004 18:46:45 +0000 (GMT) Received: from mail.ambrisko.com (adsl-64-174-51-43.dsl.snfc21.pacbell.net [64.174.51.43]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2B96943D2F for ; Mon, 23 Aug 2004 18:46:45 +0000 (GMT) (envelope-from ambrisko@ambrisko.com) Received: from server2.ambrisko.com (HELO www.ambrisko.com) (192.168.1.2) by mail.ambrisko.com with ESMTP; 23 Aug 2004 11:46:44 -0700 Received: from ambrisko.com (localhost [127.0.0.1]) by www.ambrisko.com (8.12.9p2/8.12.9) with ESMTP id i7NIkiSU080097; Mon, 23 Aug 2004 11:46:44 -0700 (PDT) (envelope-from ambrisko@ambrisko.com) Received: (from ambrisko@localhost) by ambrisko.com (8.12.9p2/8.12.9/Submit) id i7NIkiTg080096; Mon, 23 Aug 2004 11:46:44 -0700 (PDT) (envelope-from ambrisko) From: Doug Ambrisko Message-Id: <200408231846.i7NIkiTg080096@ambrisko.com> In-Reply-To: <004301c2e9ef$6e810540$0d00a8c0@Julionportable> To: Julien Lavigne du Cadet Date: Mon, 23 Aug 2004 11:46:44 -0700 (PDT) X-Mailer: ELM [version 2.4ME+ PL94b (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII cc: stable@freebsd.org Subject: Re: I/0 issue on a poweredge 750 wit sata raid 1. X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Aug 2004 18:46:45 -0000 Julien Lavigne du Cadet writes: | So I installed Freebsd 4.10 on it, and everything went well during the install. But I started a few tests (this machine is supposed to be a web server), and I've been very disappointed by the I/0 performances. In fact, the same query on the same database takes 2,56s on my old P4 (which supports about 300 persons on a vbulletin forum at the same time), and 4,80s on the new dell. Of course, the mysql configuration is the same, and I've launched the query a few time to avoid differences due to mysql cache. http://www.ambrisko.com/doug/ata Should help you. Doug A.