Date: Mon, 17 Oct 2005 15:48:55 -0400 From: John Baldwin <jhb@freebsd.org> To: obrien@freebsd.org Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org, Jung-uk Kim <jkim@freebsd.org> Subject: Re: cvs commit: src/sys/amd64/amd64 identcpu.c src/sys/i386/i386 identcpu.c Message-ID: <200510171548.57353.jhb@freebsd.org> In-Reply-To: <20051017191426.GC97488@dragon.NUXI.org> References: <200510160858.j9G8wR9v045670@repoman.freebsd.org> <200510171451.34478.jkim@FreeBSD.org> <20051017191426.GC97488@dragon.NUXI.org>
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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@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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