Virtualbox VM 100% CPU usage

[ShadowSuave]

I installed ParrotOs on a VM and anything down to the smallest tasks max out the CPU usage. My pc itself is only at about 8% while the VM is at 100%. I've given it more cores and nothing changed I have virtualization turned on in the bios, tried more cores, more ram, reinstalled the VM, but nothing seems to make a difference

 

Specs:

Ryzen 9 3900X

RTX 2070 Super

32gb ram

 

This should easily run VMs with no problem, not really sure what's going on as I've ran the same VM on an old laptop with no issues

[Srijan Verma]

Try VM ware maybe?

[Catsrules]

Have you tried a different OS? Maybe put Ubuntu on there just to test it.

[Electronics Wizardy]

what in the vm is using the cpu? Look at top or simmilar.

[G Singh]

Networking on host (in vBox application) is the root cause.
Change from NAT to NAT NETWORK or other.
Configure IP addresses accordingly.

Choosing anything other than NAT brings down CPU usage to 1% from 100% on host (in my case it was 25%, 1 core of 4 was running on 100%). Both Host & Guest now on 1-3% when not running any app.

This resolved the Host 100% CPU usage issue for me (Guest XPsp3 running on Host Ubuntu 24.04.3)


Deleted NAT entry in Networks in vBox application
Added NAT NETWORK, set ip to 10.0.2.0/24 (host)

Client end
10.0.2.4 - 253 (set ip to anything between)
255.255.255.0
10.0.2.1 (gateway)
DNS:
208.67.222.222 (opendns)
8.8.8.8 (google)

 

This resolved the issue for me ...Finally