performance: 0.682
device: 0.554
debug: 0.462
other: 0.338
network: 0.335
KVM: 0.316
PID: 0.309
boot: 0.307
vnc: 0.283
semantic: 0.272
graphic: 0.262
files: 0.224
socket: 0.101
permissions: 0.077

block copy job sometimes hangs on the last block for minutes