Panoramakvm1004qcow2

If the panoramakvm1004qcow2 image is placed on an NVMe drive, change the disk bus from default sata to virtio-scsi for millions of IOPS.

qcow2 images benefit massively from huge pages, reducing TLB misses. On the host: panoramakvm1004qcow2

echo 2048 > /proc/sys/vm/nr_hugepages

In the VM XML:

<memoryBacking>
  <hugepages/>
</memoryBacking>

To understand the utility of this file, it helps to dissect the naming convention: If the panoramakvm1004qcow2 image is placed on an