[    3.616326] tls (388) used greatest stack depth: 12616 bytes left
[    3.736315] tls (392) used greatest stack depth: 12552 bytes left
[    5.985183] tls (543) used greatest stack depth: 12480 bytes left
[    8.855597] tls (733) used greatest stack depth: 12456 bytes left
[   10.748236] tls (932) used greatest stack depth: 12328 bytes left