How is KVM set?

- You using virtio drivers?

- You passing through the CPU or emulating it?

- Does your virtual machine topology match that of the actual CPU?

- If you just using 2 virtual CPU, just pin it to one physical CPU. If now, and your CPU is NUMA aware, the Linux scheduler will bouch it around the two CPU and your cache help will be muted.

Regards,

William

On Mon, 25 May 2026 at 12:53, William Park via Talk <talk@lists.gtalug.org> wrote:

I'm running Kubuntu 26.04 inside QEMU and VirtualBox. Now, QEMU (with
KVM enabled, --enable-kvm) is supposedly be faster, but strangely it
seems slower to me. I am compiling kernel now, but that takes 2 hours
on 2 cpu, which mean I have to wait 4 hours to find out.

Is there a quick way to test cpu/ram/disk, by "quick", I mean 5min max?

------------------------------------
Description: GTALUG Talk
Unsubscribe via Talk-unsubscribe@lists.gtalug.org
Start a new thread: talk@lists.gtalug.org
This message archived at https://lists.gtalug.org/archives/list/talk@lists.gtalug.org/message/GOYK333UKEYYTJJWNEODY7IYJMGVWYTA/