SMP using cpu2 only

Kris Kennaway kris at obsecurity.org
Sat Oct 8 11:17:01 PDT 2005


On Sat, Oct 08, 2005 at 01:19:43PM -0400, Tamouh H. wrote:
> 
> Hello,
> 
> After cvsup to 5.4-P7 and compiling the Kernel with SMP, PAE, acpi options,
> I noticed when getting back in that only CPU2 is being used.

> However, I can feel the server is running sluggish and doing TOP confirms
> that only one CPU is being used:

No, it says 2 are in use.

> Any pointers if there is a patch or something I need to do for this ?
> 
> The server has 2 physical CPUs with HT enabled (Xeon 2.8GHz EM64T 800MHz
> 1MB)

You do not seem to have HT enabled.  You have to turn it on via sysctl
as well because of the security implications.

Kris
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