From owner-freebsd-current@FreeBSD.ORG Fri May 8 12:22:20 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 48D0F1065678 for ; Fri, 8 May 2009 12:22:20 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: from web63907.mail.re1.yahoo.com (web63907.mail.re1.yahoo.com [69.147.97.122]) by mx1.freebsd.org (Postfix) with SMTP id E4ED58FC26 for ; Fri, 8 May 2009 12:22:19 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: (qmail 42696 invoked by uid 60001); 8 May 2009 12:22:19 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1241785339; bh=I+xIUPErpm3qKbTrFBBTe15XteUO1GP5yU+I9t5X4I8=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Reply-To:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=kBWRjbNSSEEUtmm1mV0z2x0KwW/Le6qdp3lUZdhJHuWOK+RTdSNaoUztKhEhPzVKPz/yZlCbcBUrpScI6scBcYLewxeEdwLY7C29y+JHKeIsoDwuVKAlB+qaxDB8WsdRlTrdY5MLI2swD/ZTo63Ukb2qrPnwOId2e9B/O/OU/84= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Reply-To:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=L2qq40lNi6G+UuK7c57qfef90lW9LdLdomSzOEdfwzjovyL5Z7/bRIobCtpYGpvR++Flxg7PzRBWX2SB1/+8XykuuHeUX3uWn8+I+iafHKFkkDknqpJTWYuQN73+VyTn589CwTydM9BZzrA5p9h0Gnz5NK/mdu0ia6Wg1HG1PUM=; Message-ID: <484220.40675.qm@web63907.mail.re1.yahoo.com> X-YMail-OSG: RoKCaWMVM1lrEBkZANXzNMyxw5C4otY1KIPTderWySlZ0IAvISY5wBjYu5cH.b4gRINWWIpCh6f7V0kziPK7a8Y8lMctEL.8SCpyqTIJfNAlKccYijD_weeBsQdK2KO3IaCt9ScL9WPusTqFMRyGh6_hzTLw_Ve0lpoXuqijLdZu4YvRiKK6w1hhD3qNISc1FTHbMEyhUJT8TtILFjUwuddlEpK74FnyWpjxEoig4Dyp49gk5w1KlyvwP2im_nT5ZIu8E6tlzvkAG7A.nEYPNwToGy1ls0zIRBrxpWSkKULKqiUGGO3ZSGeRz0E- Received: from [98.242.223.106] by web63907.mail.re1.yahoo.com via HTTP; Fri, 08 May 2009 05:22:19 PDT X-Mailer: YahooMailWebService/0.7.289.10 Date: Fri, 8 May 2009 05:22:19 -0700 (PDT) From: Barney Cordoba To: Scott Long , pluknet In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Cc: Ollivier Robert , freebsd-current@freebsd.org Subject: Re: Hypertherading X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: barney_cordoba@yahoo.com List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 May 2009 12:22:20 -0000 --- On Fri, 5/8/09, pluknet wrote: > From: pluknet > Subject: Re: Hypertherading > To: "Scott Long" > Cc: "Ollivier Robert" , freebsd-current@freebs= d.org > Date: Friday, May 8, 2009, 7:13 AM > 2009/5/7 Scott Long : > > Ollivier Robert wrote: > >> > >> On 7/05/2009 10:17, Bob Bishop wrote: > >>> > >>> AFAICS the reference doesn't support that > conclusion at all. > >> > >> Nehalem CPUs'HT feature is significantly > different from the one present in > >> previous P4 CPUs. =A0Apparently, Nehalem's HT > works. =A0Memory bandwidth being > >> much higher helps too. > >> > > > > I keep here the anecdote that "it's > better". =A0Is there a good reference > > somewhere that describes exactly how it works? > > > > Scott >=20 > Hi. >=20 > There is a number of synthetic, low-level, and h/level > application > nehalem tests flowing around in Russian. > Also, not far ago (31.12.2008 18:09) Intel has published > the Intel > Optimization Reference Manual for x32/64. > (see ch. 8). It might be useful. > http://download.intel.com/design/processor/manuals/248966.pdf. >=20 Ah, Intel says that its higher priced processors are better than their lower priced processors. There's evidence you can take to the bank. Barney=0A=0A=0A