15565 gettid() = 15565
15565 +++ exited with 0 +++
15568 gettid() = 2 /* 15568 in strace's PID NS */
15568 +++ exited with 0 +++
15579 gettid() = 3 /* 15579 in strace's PID NS */
15579 +++ exited with 0 +++
15586 gettid() = 4 /* 15586 in strace's PID NS */
15586 +++ exited with 0 +++
15595 gettid() = 5 /* 15595 in strace's PID NS */
15595 +++ exited with 0 +++
