On 1 Jul 2015, at 23:18, Steve wrote:
> WARNING: Couldn't read ACPI SRAT table from BIOS. lgrp support will be
> limited to one group.
>
> I get that you only have one group, what kind of scenarios does one run
> into where multiple are beneficial? I'm thinking that maybe with
> multiple CPU's and VM's that could become handy, but I really don't know
> as I never ran into it until booting SmartOS on a desktop computer.
Welcome to the world of Non Uniform Memory Access - NUMA and the concept
of locality.
man lgrpinfo has some information on this. Here's the output of
lgrpinfo on an HP Microserver with the standard HP BIOS, which also
displays that warning on boot:
# lgrpinfo
lgroup 0 (root):
Children: none
CPUs: 0 1
Memory: installed 16G, allocated 1.9G, free 14G
Lgroup resources: 0 (CPU); 0 (memory)
Load: 0.0493
Latency: 0
--
Paul Sture
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