From owner-freebsd-questions@FreeBSD.ORG Mon Mar 27 19:14:23 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7D07F16A422 for ; Mon, 27 Mar 2006 19:14:23 +0000 (UTC) (envelope-from ericd@free.fr) Received: from meteor.synten.com (ns4.synten.com [193.47.141.42]) by mx1.FreeBSD.org (Postfix) with ESMTP id A8CA143D75 for ; Mon, 27 Mar 2006 19:14:21 +0000 (GMT) (envelope-from ericd@free.fr) Received: from Eric (ericd.netvigie.com [81.255.196.158]) by meteor.synten.com (8.13.2/8.12.9) with SMTP id k2RJED9g007549 for ; Mon, 27 Mar 2006 21:14:16 +0200 Message-ID: <000f01c651d2$a5425e50$65fd24c0@Eric> From: "Eric" To: References: <002c01c649a2$dd40d120$65fd24c0@Eric> <20060317172455.GA27140@xor.obsecurity.org> Date: Mon, 27 Mar 2006 21:14:12 +0200 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-SYNTEN-MailScanner-Information: Please contact the ISP for more information X-SYNTEN-MailScanner: Found to be clean X-SYNTEN-MailScanner-SpamScore: ss Subject: Re: Fw: Low perf of i386 6.0 on dell poweredge 1850 bi-Xeon 2.8ghzDualCore X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Mar 2006 19:14:23 -0000 Hi, Still my performance problem ( for resume mysql three time slower on freebsd 6.0 than 4.11). In fact I do new test on several server and several freebsd release and now be quiet sure that problem come from "amr" driver. I install 6.0 on other server with perc4 and have same very low performance. To resume : when doing "diskinfo -v -t amrd0" with freebsd 6.0 or 5.4 on - bi-xeon 3Ghz and scsi 15.000t hdd on perc4di Raid1 card I have slower results than on - simple AMD 2800+ with ide discs. I have same server with freebsd 4.11 and perfs are 2 or three time better. If it may help I also try freebsd 5.3, it was better but again very fare from 4.11. Does anybody know what may goes wrong with default config of freebsd 5.4, 6.0 or 6.1 beta4? Is there special things to do with amr driver? ( I try with/without smp, acpi but anything change) Thanks for help as it seems to be quiet stupid to have bi-xeon dualcore and install freebsd 4.11. Eric.