1

I have windows 10 host running virtualbox Version 5.1.22 r115126 (Qt5.6.2) And an Ubuntu 17.04 x64 guest with guest addition stuff.

The host has AMD 8 core cpu but I get a warning when assigning more than 4 cores to this VM. Would it really harm performance? why is that?

I have tried it in the past on older Ubuntu guest releases and it was the same issue.

enter image description here

enter image description here

enter image description here

enter image description here

Aus
  • 1,183
  • 11
  • 27

1 Answers1

2

Found the answer

AMD says it is 8 core but it is actually 4 physical cores, or that's what Windows tells virtualbox anyway.

Aus
  • 1,183
  • 11
  • 27
  • Under Linux host, the same virtualbox log: ``` CPUM: Logical host processors: 8 present, 8 max, 8 online, online mask: 00000000000000ff CPUM: Physical host cores: 4 ``` – Eugene Gr. Philippov Jan 04 '20 at 08:28