performance: 0.800
device: 0.800
graphic: 0.712
network: 0.477
architecture: 0.450
files: 0.351
hypervisor: 0.343
semantic: 0.342
arm: 0.332
boot: 0.321
virtual: 0.317
PID: 0.314
i386: 0.273
x86: 0.260
peripherals: 0.225
register: 0.223
VMM: 0.188
kernel: 0.175
ppc: 0.162
permissions: 0.161
TCG: 0.160
debug: 0.150
mistranslation: 0.129
vnc: 0.128
user-level: 0.126
assembly: 0.118
socket: 0.101
risc-v: 0.037
KVM: 0.029

[Feature request] qemu-img option about recompressing