device: 0.912
network: 0.661
semantic: 0.640
performance: 0.508
other: 0.472
permissions: 0.375
boot: 0.301
vnc: 0.217
graphic: 0.202
socket: 0.165
debug: 0.131
files: 0.098
PID: 0.026
KVM: 0.018

QEMU-user ignores MADV_DONTNEED