3 timerfd clockid=realtime-alarm
ASSOC,TYPE,NAME: 0
realtime-alarm
CLOCKID: 0
0.000000000
TIMERFD.REMAINING: 0
0.000000000
TIMERFD.INTERVAL: 0
3 timerfd clockid=boottime-alarm
ASSOC,TYPE,NAME: 0
boottime-alarm
CLOCKID: 0
0.000000000
TIMERFD.REMAINING: 0
0.000000000
TIMERFD.INTERVAL: 0