VirtualBox burning CPU

[Ochiroo]

I have CentOS 7.x host and Centos 7.7 guest using virtualbox 6.1 I have disabled audio, USB in virtualbox but virtualbox using over 400% CPU. Guest is almost idle CPU usage around 30% in guest side.
Host

Host

host.png (4.71 KiB) Viewed 1311 times

Guest

Guest

guest.png (11.68 KiB) Viewed 1311 times

Here is VirtualBOX log1

123123.log

Log

(80.47 KiB) Downloaded 5 times

[fth0]

In top, please use the 'H' command to show the threads.

Edit:
In the VM configuration, enable System > Acceleration > Nested Paging. And don't use System > Processor > Execution Cap, I haven't heard much good about it.

[Ochiroo]

Ok. Nested paging is enabled

here is top -H

top -H.png (47.46 KiB) Viewed 1265 times

[fth0]

It looks like you have 2 VMs (VirtualBoxVM processes) running, and only the VM with 1 vCPU is generating high CPU load now. You may notice that all threads belonging to a single process have the same %MEM, VIRT, RES, SHR values. Watch the situation in top to see if the CPU load stays with the same threads, or which threads from which process are affected.

[Ochiroo]

Yeap i have 2 VM
thanks for advice finally i figured out it

[fth0]

Thanks for reporting back!

If you write what you've figured out, it may help someone else when reading this thread in the future.

[Ochiroo]

Issue was my fault, I had 2 VM. I have assigned 10 cores to VM1 and assigned 4 cores to VM2. VM1 configured properly but VM2 USB and Audio enabled and disabled Hardware virtualization (Nested paging). When disabled usb and audio and enabled Nested paging. Now core loads reduced to around 3-60%.