A question on SMP from the forums to the mailing list

[Luciano Mannucci]

On Thu, 19 May 2016 19:08:28 -0400
Joe Nosay <superbisquit at gmail.com> wrote:

> And, considering that the laptop will be a reality soon enough, what is the
> current state for SMP on the POWER architecture for FreeBSD?
Working? :-)

Well, there are servers at reasonable prices and a lot of cores &/|
sockets with POWER 8 cpus. Mine has a lot of problems, though none
seem to be related to SMP :). I'm running 11-CURRENT and I get:

root@:/ # dmesg | grep CPU
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
cpulist0: <Open Firmware CPU Group> on ofwbus0
cpu0: <Open Firmware CPU> on cpulist0
cpu1: <Open Firmware CPU> on cpulist0
SMP: AP CPU #8 launched

root@:/ # sysctl kern.sched.topology_spec
kern.sched.topology_spec: <groups>
 <group level="1" cache-level="0">
  <cpu count="2" mask="101,0,0,0">0, 8</cpu>
 </group>
</groups>

Cheers,

Luciano.
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