From owner-freebsd-questions@FreeBSD.ORG Wed Jan 12 00:52:48 2005 Return-Path: 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 04BB016A550 for ; Wed, 12 Jan 2005 00:52:48 +0000 (GMT) Received: from spatula.dreamhost.com (spatula.dreamhost.com [66.33.205.9]) by mx1.FreeBSD.org (Postfix) with ESMTP id D92C343D45 for ; Wed, 12 Jan 2005 00:52:47 +0000 (GMT) (envelope-from lists@tntluoma.com) Received: from [68.243.126.247] (016-020-084.area7.spcsdns.net [68.243.126.247]) by spatula.dreamhost.com (Postfix) with ESMTP id A166317D03C for ; Tue, 11 Jan 2005 16:52:39 -0800 (PST) Mime-Version: 1.0 X-Mailer: SnapperMail 2.1.1.01 by Snapperfish, www.snappermail.com To: freebsd-questions@freebsd.org From: "Timothy J. Luoma" Date: Tue, 11 Jan 2005 19:52 -0500 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Message-ID: <9094-SnapperMsgD246FC56BE0A255B@68.243.126.247> Subject: Hyperthreading hurts 5.3? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Jan 2005 00:52:48 -0000 summary: should I disable hypertheading in the BIOS when running 5.3? Background info: I have a new Dell Dimension 3000 running 5.3. I noticed some huge pauses when copying a large # of files across the network. Googling around found some information about earlier versions of 5.x and Hyperthreading being detrimenatl for performance. Whether or not it was the source of the network copy problem, I am trying to decide if I should disable Hyperthreading. Iif YES, I wasn't clear if people meant "disable in BIOS" or just some configuration setting in a *.conf file. (disabling HT will apparently mean I have to reinstall XP on the other drive. Not necessarily a bad thing, as it is supposedly also the way to solve the problem of my modem causing a BSOD in XP) thanks TjL