[    1.891665] ip (247) used greatest stack depth: 12392 bytes left
[    2.072002] ip (259) used greatest stack depth: 12344 bytes left
[   50.829174] netem: version 1.3
[   71.325065] ip (2379) used greatest stack depth: 12056 bytes left
[  575.394084] tc (11923) used greatest stack depth: 11872 bytes left