15133 gettid() = 15133
15133 +++ exited with 0 +++
15136 gettid() = 2 /* 15136 in strace's PID NS */
15136 +++ exited with 0 +++
15147 gettid() = 3 /* 15147 in strace's PID NS */
15147 +++ exited with 0 +++
15154 gettid() = 4 /* 15154 in strace's PID NS */
15154 +++ exited with 0 +++
15168 gettid() = 5 /* 15168 in strace's PID NS */
15168 +++ exited with 0 +++
