From owner-freebsd-performance@FreeBSD.ORG Sun May 21 20:55:45 2006 Return-Path: X-Original-To: freebsd-performance@freebsd.org 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 C815D16A52C for ; Sun, 21 May 2006 20:55:45 +0000 (UTC) (envelope-from hakmi@rogers.com) Received: from smtp103.rog.mail.re2.yahoo.com (smtp103.rog.mail.re2.yahoo.com [206.190.36.81]) by mx1.FreeBSD.org (Postfix) with SMTP id BD2C343D67 for ; Sun, 21 May 2006 20:55:42 +0000 (GMT) (envelope-from hakmi@rogers.com) Received: (qmail 45658 invoked from network); 21 May 2006 20:55:42 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=rogers.com; h=Received:From:To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:X-MimeOLE:Thread-Index; b=C2AgEfc9iHLYTzoi62NdOn5HWyO2CutIcTrNpAmrgc7Ic7HxMPF6WwhziIiRJS82+CgNy6a7yXAf9zIl1KnoVqFua61vh4FaY2df/IkjvX4AIDxsafMBQCnbdq+BtlLCJQHgO8cZcddkmjP5hfnyMNfnJe8a499mEnmcu2jUiiw= ; Received: from unknown (HELO tamouh) (hakmi@rogers.com@70.27.160.99 with login) by smtp103.rog.mail.re2.yahoo.com with SMTP; 21 May 2006 20:55:42 -0000 From: "Tamouh H." To: Date: Sun, 21 May 2006 16:56:02 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook, Build 11.0.6353 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 Thread-Index: AcZ9GPfcupyKUb+HRIykVESbLsF2aA== Message-Id: <20060521205542.BD2C343D67@mx1.FreeBSD.org> Subject: FBSD 5.x CPU performance on MSVS 2005 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 May 2006 20:55:47 -0000 Hi, I've been doing some testing with Microsoft Virtual Server 2005 R2 and = FreeBSD, so far compatibility has been great across the board with all = versions of FreeBSD from 4.x - 7.x on IDE based virtual drives (no = compatibility with SCSI driver). However, on FreeBSD 5.x I noticed the CPU detected by FreeBSD is half of = the actual CPU available (e.g. the machine has 6 x 900MHz CPUs and each = VM is assigned a 900MHz CPU), yes FreeBSD 5.x detects the CPU frequency = at 400-498MHz no matter what settings I try to change and what options = I've added to the kernel. This usually resulted in "time went backward" = errors and significant performance impact. I tried FBSD 7.x-CURRENT and the CPU was detected perfectly fine as = P-III 900MHz and performance was much better improved.=20 Results were obtained through: > sysctl hw.clockrate I've left notes on this matter at freebsd-questions: http://lists.freebsd.org/pipermail/freebsd-questions/2006-January/111628.= html Any advise or check on this is appreciated, I can provide access to the = VM machines if wanted. Thx, Tamouh Hakmi