2xAMD Opteron 6128 with libvirt, Physical CPU 13 doesn't exist
- by yak
I need help with libvirt(?) problem.
Server specs:
ProLiant DL165 G7
2x AMD Opteron(tm) Processor 6128
System:
Debian GNU/Linux testing (wheezy)
3.2.0-3-amd64
libvirt 0.9.12-5
kvm 1:1.1.2+dfsg-2
$ grep processor /proc/cpuinfo | wc -l
16
$ virsh nodeinfo
setlocale: No such file or directory
CPU model: x86_64
CPU(s): 16
CPU frequency: 800 MHz
CPU socket(s): 2
Core(s) per socket: 4
Thread(s) per core: 1
NUMA cell(s): 1
Memory size: 66114200 KiB
$ virsh capabilities
..
<topology>
<cells num='4'>
<cell id='0'>
<cpus num='4'>
<cpu id='0'/>
<cpu id='1'/>
<cpu id='2'/>
<cpu id='3'/>
</cpus>
</cell>
<cell id='1'>
<cpus num='4'>
<cpu id='4'/>
<cpu id='5'/>
<cpu id='6'/>
<cpu id='7'/>
</cpus>
</cell>
<cell id='2'>
<cpus num='4'>
<cpu id='12'/>
<cpu id='13'/>
<cpu id='14'/>
<cpu id='15'/>
</cpus>
</cell>
<cell id='3'>
<cpus num='4'>
<cpu id='8'/>
<cpu id='9'/>
<cpu id='10'/>
<cpu id='11'/>
</cpus>
</cell>
</cells>
</topology>
..
$ virsh vcpupin vm 0 13,12,11,10,9,8,7,6,5
error: Physical CPU 13 doesn't exist.
error: cpulist: Invalid format.
Question?
Why my VM Guests use only first 8 CPUs and next 8 are idling?
$ for host in virsh list | awk '{print $2}'; do virsh vcpuinfo $host; done | grep ^CPU: | sort | uniq
CPU: 0
CPU: 1
CPU: 2
CPU: 3
CPU: 4
CPU: 5
CPU: 6
CPU: 7
Any ideas how to change it?
