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Date:      Wed, 18 May 2005 18:08:28 -0700
From:      "David O'Brien" <obrien@freebsd.org>
To:        Brooks Davis <brooks@one-eyed-alien.net>
Cc:        freebsd-amd64@freebsd.org
Subject:   Re: FreeBSD on dual core Opterons - stupid buildworld test
Message-ID:  <20050519010828.GA64608@dragon.NUXI.org>
In-Reply-To: <20050518180521.GB9719@odin.ac.hmc.edu>
References:  <428B6FC1.3000907@fsn.hu> <1116437340.69035.0.camel@hood.oook.cz> <20050518180521.GB9719@odin.ac.hmc.edu>

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On Wed, May 18, 2005 at 11:05:21AM -0700, Brooks Davis wrote:
> On Wed, May 18, 2005 at 07:29:00PM +0200, Pav Lucistnik wrote:
> > Attila Nagy pí?e v st 18. 05. 2005 v 18:39 +0200:
> > > Hello,
> > > 
> > > I did some buildworld tests on an HP BL45p with 4 2,2 GHz Opterons.
> > > 
> > > Sequential time make buildworld -jX times (if there is a missing 
> > > iteration, then the build has failed):
> > 
> > > http://people.fsn.hu/~bra/bl45p/dmesg.boot
> > 
> > >  Hyperthreading: 2 logical CPUs
> > 
> > So dual-core Opterons report into system as Hyperthreading? Uncool.
> 
> What the AMD reps said at a session I attended last year is that they
> report as supporting hyper threading, but set another bit to say that
> they are actually real cores.  We probably need to find out what that        
> bit is.

I'm taking care of this.  Please no one commit any AMD Dual-core related
patches (especially WRT HTT) with out passing them by me.

thanks,
-- 
-- David  (obrien@FreeBSD.org)



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