[    2.517772] ip (270) used greatest stack depth: 12320 bytes left
[   10.654862] ip (836) used greatest stack depth: 12272 bytes left
[   53.029667] netem: version 1.3
[  231.664184] ip (4026) used greatest stack depth: 12048 bytes left
[  568.642397] tc (11923) used greatest stack depth: 11872 bytes left