device: 0.862
performance: 0.823
network: 0.743
architecture: 0.617
kernel: 0.559
arm: 0.450
user-level: 0.421
TCG: 0.398
risc-v: 0.393
graphic: 0.370
peripherals: 0.357
ppc: 0.349
VMM: 0.339
vnc: 0.335
semantic: 0.275
mistranslation: 0.242
register: 0.203
boot: 0.203
permissions: 0.195
debug: 0.191
PID: 0.179
files: 0.151
socket: 0.132
KVM: 0.070
hypervisor: 0.054
virtual: 0.052
assembly: 0.030
i386: 0.020
x86: 0.003

can not handler real-time signal (signal number > 30) by sigqueue on linux user mode