[    2.176035] ip (287) used greatest stack depth: 12320 bytes left
[   21.864963] ip (1128) used greatest stack depth: 12272 bytes left
[   47.546132] netem: version 1.3
[  229.168050] ip (4034) used greatest stack depth: 12048 bytes left
[  533.664921] tc (11931) used greatest stack depth: 11824 bytes left