From owner-freebsd-current Thu Feb 27 6:42:16 2003 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 8B7EB37B401; Thu, 27 Feb 2003 06:42:15 -0800 (PST) Received: from puffin.mail.pas.earthlink.net (puffin.mail.pas.earthlink.net [207.217.120.139]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0F83543FBD; Thu, 27 Feb 2003 06:42:15 -0800 (PST) (envelope-from tlambert2@mindspring.com) Received: from pool0140.cvx40-bradley.dialup.earthlink.net ([216.244.42.140] helo=mindspring.com) by puffin.mail.pas.earthlink.net with asmtp (SSLv3:RC4-MD5:128) (Exim 3.33 #1) id 18oPEj-0000SJ-00; Thu, 27 Feb 2003 06:42:14 -0800 Message-ID: <3E5E2370.F1701920@mindspring.com> Date: Thu, 27 Feb 2003 06:40:48 -0800 From: Terry Lambert X-Mailer: Mozilla 4.79 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Juli Mallett Cc: Trish Lynch , John Baldwin , Slawek Zak , freebsd-current@FreeBSD.ORG Subject: Re: HyperThreading not working? References: <20030226174154.G830-100000@femme> <20030226164713.B2816@FreeBSD.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-ELNK-Trace: b1a02af9316fbb217a47c185c03b154d40683398e744b8a4e1a2cd6e261879645e3803d83d247854350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Juli Mallett wrote: > > > > Any thoughts? I attach full dmesg and mptable output. Kernel > > > > config too. > > > > > > 5.0 doesn't support HyperThreading. The upcoming 5.1 and 4.8 releases > > > will support it. > > > > it doesn't? I have a 5.0-R box that surely does support HTT. > > Your BIOS puts the logical CPUs into the MPTable. John Baldwin posted a patch for this that would use the CPUID instruction to detect Hyperthreading. Of course, that means you can not turn it off. The patch was posted to -current about 3-4 weeks ago. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message