[    1.361782] ip (216) used greatest stack depth: 12152 bytes left
[   56.536351] netem: version 1.3
[   90.048022] ip (4820) used greatest stack depth: 12104 bytes left
[  122.129779] ip (5220) used greatest stack depth: 12072 bytes left
[  520.533291] tc (20911) used greatest stack depth: 11680 bytes left