default :1 ,aaaaaaaaaa/chiark.greenend.org.uk start 929580072.670441 socket type=SOCK_DGRAM socket=4 +0.000191 fcntl fd=4 cmd=F_GETFL fcntl=~O_NONBLOCK&... +0.000084 fcntl fd=4 cmd=F_SETFL O_NONBLOCK|... fcntl=OK +0.000061 close fd=4 close=OK +0.000001