cvs commit: src/sys/amd64/amd64 identcpu.c src/sys/i386/i386 identcpu.c

[John Baldwin]

On Monday 17 October 2005 03:14 pm, David O'Brien wrote:
> On Mon, Oct 17, 2005 at 02:51:31PM -0400, Jung-uk Kim wrote:
> > On Monday 17 October 2005 02:31 pm, David O'Brien wrote:
> > > On Mon, Oct 17, 2005 at 02:17:33PM -0400, Jung-uk Kim wrote:
> > > > On Monday 17 October 2005 01:28 pm, David O'Brien wrote:
> > > > >     CPU: Dual Core AMD Opteron(tm) Processor 280 (2392.35-MHz
> > > > > K8-class CPU) ..
> > > > >     Physical/Logical cores: 2/2
> > > > >     ..
> > > > >     FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
>
> ..
>
> > > > The information is per-CPU.  You have two CPUs with dual cores,
> > > > which means the given information is correct.  Please back it
> > > > out.
> > >
> > > No, this given information is wrong.  AMD does not have
> > > HyperThreading. You are treating it as if it does.
> >
> > ???  Did I ever mention Hyper-Threading here?  I actually replaced
> > misleading 'Hyperthreading' with 'Physical/Logical cores.'
>
> What else is x86/x86-64 "Physical/Logical cores" other than
> HyperThreading?

A physical core?  Looks like 2 physical cores with 2 logical cpus which means 
each core has 1 logical CPU, which is true, because your cores lack HTT 
support.  On a dual core chip with 2 HTT's per core it would probably be 2/4, 
yes?

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org