From owner-freebsd-smp@FreeBSD.ORG Tue Aug 2 13:09:55 2005 Return-Path: X-Original-To: freebsd-smp@freebsd.org Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DC6D016A41F for ; Tue, 2 Aug 2005 13:09:55 +0000 (GMT) (envelope-from info@bluemambo.ch) Received: from mail.whitecube.ch (ns3.whoswe.ch [62.2.109.243]) by mx1.FreeBSD.org (Postfix) with ESMTP id 142A543D46 for ; Tue, 2 Aug 2005 13:09:47 +0000 (GMT) (envelope-from info@bluemambo.ch) Received: from localhost (localhost.whoswe.ch [127.0.0.1]) by mail.whitecube.ch (Postfix) with ESMTP id A8077144 for ; Tue, 2 Aug 2005 15:09:45 +0200 (CEST) Received: from mail.whitecube.ch ([127.0.0.1]) by localhost (mail.whitecube.ch [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 47301-05 for ; Tue, 2 Aug 2005 15:09:40 +0200 (CEST) Received: from wsipa (62-2-209-22.webcom.cablecom.ch [62.2.209.22]) by mail.whitecube.ch (Postfix) with ESMTP id 6792D31 for ; Tue, 2 Aug 2005 15:09:40 +0200 (CEST) From: "Blue_Mambo" To: Date: Tue, 2 Aug 2005 15:07:26 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook, Build 11.0.6353 In-Reply-To: Thread-Index: AcWXXuvgQNWT83/RRVGG18Tpqg9ijwAA/bUw X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 Message-Id: <20050802130940.6792D31@mail.whitecube.ch> X-Virus-Scanned: amavisd-new at whoswe.ch Subject: AW: Experiences with Intel 820 Dual-Core.... X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD SMP implementation group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Aug 2005 13:09:56 -0000 Only the new Intel Pentium Extreme Edition with dual-core supports HT... = the normal one does not support HT -----Urspr=FCngliche Nachricht----- Von: owner-freebsd-smp@freebsd.org = [mailto:owner-freebsd-smp@freebsd.org] Im Auftrag von B Thomas Gesendet: Dienstag, 2. August 2005 14:37 An: freebsd-smp@freebsd.org Betreff: Re: Experiences with Intel 820 Dual-Core.... The Pentium D 820 is not HT enabled. You get 2 cores, but they do not support multiple hyperthreads per core. I'm typing this on a new D 820 system, and there are 2 cores, but that's it. See http://www.intel.com/products/processor/pentium_D/index.htm for more info. As for overall performance, it's a bit of apples to oranges. My other system (hyperthreaded) had a faster clock speed, but the 820 has a larger cache and somewhat faster data paths. Overall, the dual core feels faster, but it may be the overall system and not the processor. -b > Message: 2 > Date: Mon, 1 Aug 2005 21:57:43 -0400 > From: Indigo 23 > Subject: Re: Experiences with Intel 820 Dual-Core.... > To: freebsd-smp@freebsd.org > Message-ID: <6f50eac405080118571e8e817b@mail.gmail.com> > Content-Type: text/plain; charset=3DISO-8859-1 >=20 > Well more specifically, I was just wondering if it is a wise idea to = turn on > HyperThreading (i.e. will I see any benefit performance wise)? >=20 > PS. I know about the security issue regarding HT already. _______________________________________________ freebsd-smp@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-smp To unsubscribe, send any mail to "freebsd-smp-unsubscribe@freebsd.org"