files: 0.833
performance: 0.803
other: 0.751
device: 0.751
network: 0.634
graphic: 0.539
debug: 0.494
semantic: 0.354
PID: 0.265
vnc: 0.259
permissions: 0.181
KVM: 0.170
boot: 0.168
socket: 0.138

[block jobs]Guest hang when dd file on snapshot overlay(iothread enable)