device: 0.867
performance: 0.711
graphic: 0.577
network: 0.551
files: 0.344
boot: 0.175
debug: 0.142
semantic: 0.128
PID: 0.067
socket: 0.029
vnc: 0.027
permissions: 0.025
other: 0.025
KVM: 0.003

qemu-img: support ZSTD compression level customization