graphic: 0.991
device: 0.799
performance: 0.647
network: 0.273
permissions: 0.127
boot: 0.108
files: 0.107
other: 0.082
debug: 0.075
semantic: 0.068
PID: 0.048
vnc: 0.044
socket: 0.027
KVM: 0.013

qemu-riscv64 mmap  will exhaust all physical memory