Virtualization apps can't detect all the CPU cores- Community

Virtualization apps can't detect all the CPU cores

Community Discussion 990 views · 4 replies ·

savanweylyn

deepin

2017-01-20 00:06

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Since I've installed Deepin on an SSD, none of the virtualization apps (vmWare Workstation, VirtualBox, qemu-kvm) can onyl detect two of the four CPU cores. Why?

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HualetWang

deepin

2017-01-20 01:12

Have you checked in the System Monitor application and confirmed that the host machine is running 4 cores instead of 2 ?

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yangbo

deepin

2017-01-20 01:24

Not sure about this. Maybe hyperthread?

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savanweylyn

deepin

2017-01-20 01:54

https://bbs.deepin.org/post/134319
Have you checked in the System Monitor application and confirmed that the host machine is running 4 ...

Yes. It shows that the host machine is running 2 cores. While the host has 4 CPU cores. Output of lscpu shows this:

CPU(s):                      4
On-line CPU(s) list:    0,3
Off-line CPU(s) list:    1,2
Thread(s) per core: 1
Core(s) per socket:    2
Socket(s):                   1
NUMA node(s):          1
Vendor ID:                   AuthenticAMD
CPU family:                22
Model:                         48
Model name:             AMD A6-6310 APU with AMD Radeon R4 Graphics

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savanweylyn

deepin

2017-01-20 08:56

Problem solved. It was caused by Laptop Mode Tools' cpuhotplug module. It supposed to disable idle CPU cores when on battery,.

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