27636 gettid() = 27636
27636 +++ exited with 0 +++
27626 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=27636, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
27644 gettid() = 2 /* 27644 in strace's PID NS */
27644 +++ exited with 0 +++
27626 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=27644, si_uid=65534, si_status=0, si_utime=0, si_stime=0} ---
27648 gettid() = 3 /* 27648 in strace's PID NS */
27648 +++ exited with 0 +++
27626 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=27648, si_uid=65534, si_status=0, si_utime=0, si_stime=0} ---
27652 gettid() = 4 /* 27652 in strace's PID NS */
27652 +++ exited with 0 +++
27626 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=27652, si_uid=65534, si_status=0, si_utime=0, si_stime=0} ---
27655 gettid() = 5 /* 27655 in strace's PID NS */
27655 +++ exited with 0 +++
27626 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=27655, si_uid=65534, si_status=0, si_utime=0, si_stime=0} ---
27626 +++ exited with 0 +++
27638 +++ exited with 0 +++