performance: 0.514
PID: 0.512
device: 0.478
semantic: 0.402
network: 0.362
graphic: 0.246
debug: 0.196
other: 0.164
permissions: 0.163
boot: 0.115
socket: 0.076
files: 0.059
vnc: 0.048
KVM: 0.045

linux-user: waitid leaves target siginfo uninitialized when info.si_pid is zero