Recommended SMP Config

[Vulpes Velox]

On Fri, 17 Mar 2006 11:58:54 -0600
"Larry Rosenman" <ler at lerctr.org> wrote:

> John Baldwin wrote:
> > On Friday 17 March 2006 12:00, Tom Daly wrote:
> >>> Because CPU 1 is a hyperthread.  So is CPU 3 for that matter.
> >> 
> >> That makes sense, but CPU 3 shows up in top without setting
> >> machdep.hyperthreading_allowed=1. ???
> > 
> > Yes, that's a bug.
> 
> I saw the same thing on my AMD64 system as well, if that matters.

I am curious, how are you seeing this on the AMD64 when it is not
hyperthreaded?

 
> I've since set machdep.hyperthreading_allowed=1, but was curious.
> 
> Thanks for the confirmation that it's a bug.
> 
> If you or anyone needs a test bed, I have a dual-xeon em64t box
> that I can give access to.