From owner-freebsd-current@FreeBSD.ORG Thu Aug 25 07:04:58 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8805D16A41F for ; Thu, 25 Aug 2005 07:04:58 +0000 (GMT) (envelope-from cperciva@freebsd.org) Received: from pd4mo3so.prod.shaw.ca (shawidc-mo1.cg.shawcable.net [24.71.223.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2988C43D46 for ; Thu, 25 Aug 2005 07:04:57 +0000 (GMT) (envelope-from cperciva@freebsd.org) Received: from pd5mr6so.prod.shaw.ca (pd5mr6so-qfe3.prod.shaw.ca [10.0.141.182]) by l-daemon (Sun ONE Messaging Server 6.0 HotFix 1.01 (built Mar 15 2004)) with ESMTP id <0ILR00KRENDCLRD0@l-daemon> for freebsd-current@freebsd.org; Thu, 25 Aug 2005 00:58:24 -0600 (MDT) Received: from pn2ml5so.prod.shaw.ca ([10.0.121.149]) by pd5mr6so.prod.shaw.ca (Sun ONE Messaging Server 6.0 HotFix 1.01 (built Mar 15 2004)) with ESMTP id <0ILR00JAJNDC2TH0@pd5mr6so.prod.shaw.ca> for freebsd-current@freebsd.org; Thu, 25 Aug 2005 00:58:24 -0600 (MDT) Received: from [192.168.0.60] (S0106006067227a4a.vc.shawcable.net [24.87.209.6]) by l-daemon (iPlanet Messaging Server 5.2 HotFix 1.18 (built Jul 28 2003)) with ESMTP id <0ILR00C24NDCDH@l-daemon> for freebsd-current@freebsd.org; Thu, 25 Aug 2005 00:58:24 -0600 (MDT) Date: Wed, 24 Aug 2005 23:58:23 -0700 From: Colin Percival In-reply-to: <430D68D4.50609@drexel.edu> To: "Justin R. Smith" Message-id: <430D6C0F.1070909@freebsd.org> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 7bit X-Accept-Language: en-us, en X-Enigmail-Version: 0.92.0.0 References: <430D68D4.50609@drexel.edu> User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050724) Cc: freebsd-current@freebsd.org Subject: Re: On a hyperthreaded system, top and gnome system monitor only report one processor X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Aug 2005 07:04:58 -0000 Justin R. Smith wrote: > FreeBSD jsmith.org 6.0-BETA3 FreeBSD 6.0-BETA3 #0: Tue Aug 23 08:04:37 > EDT 2005 jsmith@jsmith.org:/usr/obj/usr/src/sys/MYKERNEL i386 > > Top lists all process as being run by processor 0 > > The gnome system monitor lists only processor 0 as well (under gentoo > linux it shows two). Hyperthreading is disabled by default for security reasons. If you want to enable it (which is generally safe on single-user systems), you should add the following line to /boot/loader.conf : machdep.hyperthreading_allowed=1 Colin Percival FreeBSD Security Officer