performance: 0.947
device: 0.812
graphic: 0.500
network: 0.344
semantic: 0.339
other: 0.284
boot: 0.236
PID: 0.167
permissions: 0.154
debug: 0.108
vnc: 0.105
files: 0.058
KVM: 0.013
socket: 0.010

[Feature request] qemu-img multi-threaded compressed image conversion