From owner-freebsd-stable@FreeBSD.ORG Thu Jan 25 21:19:24 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8D35816A401 for ; Thu, 25 Jan 2007 21:19:24 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from tarsier.geekcn.org (tarsier.geekcn.org [210.51.165.229]) by mx1.freebsd.org (Postfix) with ESMTP id 4342713C469 for ; Thu, 25 Jan 2007 21:19:24 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from localhost (tarsier.geekcn.org [210.51.165.229]) by tarsier.geekcn.org (Postfix) with ESMTP id 66CB7EB3634; Fri, 26 Jan 2007 05:19:23 +0800 (CST) X-Virus-Scanned: amavisd-new at geekcn.org Received: from tarsier.geekcn.org ([210.51.165.229]) by localhost (mail.geekcn.org [210.51.165.229]) (amavisd-new, port 10024) with ESMTP id JKdjIa0ZUXYP; Fri, 26 Jan 2007 05:19:14 +0800 (CST) Received: from [192.168.1.32] (unknown [221.216.129.92]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tarsier.geekcn.org (Postfix) with ESMTP id B9A83EB31B2; Fri, 26 Jan 2007 05:19:14 +0800 (CST) DomainKey-Signature: a=rsa-sha1; s=default; d=delphij.net; c=nofws; q=dns; h=message-id:date:from:organization:user-agent:mime-version:to:cc: subject:references:in-reply-to:x-enigmail-version:content-type; b=mj/33kICOZkMORd0U5+NUpyfaWtgSPGvlp/9gTd3Iw5f0Cbus5Kq4XHB/x4vnmUbz GjXv0v2QPQ4mI6dKs5lZQ== Message-ID: <45B91ED2.6080800@delphij.net> Date: Fri, 26 Jan 2007 05:19:14 +0800 From: LI Xin Organization: The FreeBSD Project User-Agent: Thunderbird 1.5.0.9 (Macintosh/20061207) MIME-Version: 1.0 To: Oles Hnatkevych References: <1638945315.20070125224856@able.com.ua> In-Reply-To: <1638945315.20070125224856@able.com.ua> X-Enigmail-Version: 0.94.1.0 Content-Type: multipart/signed; micalg=pgp-ripemd160; protocol="application/pgp-signature"; boundary="------------enigFF772DEB971A04DB4E2FC8DD" Cc: freebsd-stable@freebsd.org Subject: Re: second cpu not used on smp platform X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Jan 2007 21:19:24 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigFF772DEB971A04DB4E2FC8DD Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Oles Hnatkevych wrote: > Hello! >=20 > Just cvsup-ed and upgraded to 6.2-STABLE. >=20 > The box has hyperthreading processor: >=20 > # more /var/run/dmesg.boot |grep -i cpu > CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (3000.37-MHz 686-class CPU) > Logical CPUs per core: 2 > FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs > cpu0 (BSP): APIC ID: 0 > cpu1 (AP): APIC ID: 1 > cpu0: on acpi0 > cpu1: on acpi0 > SMP: AP CPU #1 Launched! [...] > What it can be???? This is done intentionally on all -STABLE branches, see http://security.freebsd.org/advisories/FreeBSD-SA-05:09.htt.asc for detai= ls. Note that it is possible to re-enable htt if you know what you are doing, by setting machdep.hyperthreading_allowed. Please note that enabling hyperthreading does hurt performance for many cases, so you will want to evaluate if you really want it, or to disable it from BIOS. Cheers, --=20 Xin LI http://www.delphij.net/ FreeBSD - The Power to Serve! --------------enigFF772DEB971A04DB4E2FC8DD Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFuR7SOfuToMruuMARAw1lAJ9lKAA4k/mztaoQmrC4GkKd9O4zbwCdFTTE 7MQUbULdZ3hAsnMEWwpam5c= =kr9r -----END PGP SIGNATURE----- --------------enigFF772DEB971A04DB4E2FC8DD--