On Mon, May 25, 2026 at 02:52:03PM -0400, William Park via Talk wrote:
Your questions are over my head. I can't give meaningful answers. :-)
QEMU was started with
*qemu-system-x86_64* -m 4096 -smp 2 *-cpu host -enable-kvm* \ -usb -usbdevice tablet \ -net user -net nic \ -hda kubuntu2604.qcow2
where I'm assuming, "-cpu host" means QEMU figures it out (Haswell, i3-4170).
I believe the obsolete -hda emulates an old IDE controller. Better to use the modern syntax: -device virtio-scsi-pci,id=scsi0 -drive file=kubuntu2604.qcow2,if=none,id=hd0,format=qcow2 -device scsi-hd,drive=hd0,bus=scsi0.0 instead of -hda ... That will emulate a virtio scsi controller which is way more efficient than the ide interface. Using a raw disk would be slightly faster than qcow2, but also take more space, usually. Only really a problem for VMs that write a lot. Not sure how well 4G ram does for running a GUI. Sounds potentially painful. -- Len Sorensen