Multiple CPUs

[Kris Kennaway]

On Tue, Dec 13, 2005 at 02:12:57PM -0500, Robert Fitzpatrick wrote:
> I guess this means my new server is only using one of my CPUs?
> 
> esmtp# grep CPU /var/log/dmesg.today
> CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2399.33-MHz 686-class CPU)
>   Hyperthreading: 2 logical CPUs
> cpu0: <ACPI CPU (2 Cx states)> on acpi0
> 
> Can someone point me to the best doc for enabling use of both CPUs on
> the FreeBSD 5.4 server? I assume the kernel needs built with options.

FYI, hyperthreading is not a real CPU, and it seems to *really* hurt
performance on most workloads.  You'll probably benefit from not using
it.

Kris
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