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Date:      Mon, 16 Jan 2006 14:51:37 -0500
From:      Vivek Khera <vivek@khera.org>
To:        "Marc G. Fournier" <scrappy@hub.org>
Cc:        freebsd-amd64@freebsd.org
Subject:   Re: first time with a 64bit CPU ... kernel config ...
Message-ID:  <13F6B269-3C1B-4F9E-ACD6-412AA9162AD3@khera.org>
In-Reply-To: <20060116152427.A28752@ganymede.hub.org>
References:  <20060110235259.N1006@ganymede.hub.org> <4294ECA5-C8B6-484A-94BA-5EBC61498280@khera.org> <20060114012450.U28752@ganymede.hub.org> <D3F5D17A-028D-481D-81A8-D1BCE6BD0137@khera.org> <20060116152427.A28752@ganymede.hub.org>

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On Jan 16, 2006, at 2:25 PM, Marc G. Fournier wrote:

> perfect, thanks ... final question for now ... when I get and put  
> in the second CPU, is there anything I need to add/change in the  
> kernel config file for it, or will it just be auto-detected?

options SMP

done.  i'm fairly confident you can boot such a kernel on a single  
CPU too.

also, make sure you don't have hyperthreading on these processors  
on.  it seems to just degrade performance.  if you build a SMP  
kernel, it will try to use hyperthreading unless you tell it not to  
and/or it is disabled in bios.




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