[    1.904636] ip (251) used greatest stack depth: 12400 bytes left
[    2.474862] ip (290) used greatest stack depth: 12352 bytes left
[   53.580708] netem: version 1.3
[   92.277884] ip (2495) used greatest stack depth: 12312 bytes left
[  599.916738] tc (11924) used greatest stack depth: 11936 bytes left