25932 gettid() = 25932 25932 +++ exited with 0 +++ 25928 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25932, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- 25936 gettid() = 2 /* 25936 in strace's PID NS */ 25936 +++ exited with 0 +++ 25928 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25936, si_uid=65534, si_status=0, si_utime=0, si_stime=0} --- 25940 gettid() = 3 /* 25940 in strace's PID NS */ 25940 +++ exited with 0 +++ 25928 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25940, si_uid=65534, si_status=0, si_utime=0, si_stime=0} --- 25944 gettid() = 4 /* 25944 in strace's PID NS */ 25944 +++ exited with 0 +++ 25928 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25944, si_uid=65534, si_status=0, si_utime=0, si_stime=0} --- 25952 gettid() = 5 /* 25952 in strace's PID NS */ 25952 +++ exited with 0 +++ 25928 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25952, si_uid=65534, si_status=0, si_utime=0, si_stime=0} --- 25928 +++ exited with 0 +++ 25935 +++ exited with 0 +++