Running SMP kernel but only one cpu

[Duane]

I have a fairly new install of 6.4, done over the 'net, on this old
Micron full tower dual PPro-180. The SMP kernel was automagically
installed:

# uname -a
FreeBSD poobah.legomenon.org 6.4-RELEASE FreeBSD 6.4-RELEASE #0: Wed
Nov 26 12:11:16 UTC 2008
root at dessler.cse.buffalo.edu:/usr/obj/usr/src/sys/SMP  i386

Performance was *rather* sluggish so I tried to ascertain if both
processors were running:

# dmesg | grep cpu
cpu0 on motherboard

Q1. Is there a better way to establish how many processors are running?

Q2. Do I need to specify, say in rc.conf, that I *want* SMP to be enabled?


Best regards,

-- 
Duane