[    2.364594] ip (287) used greatest stack depth: 12360 bytes left
[    2.476186] ip (296) used greatest stack depth: 12344 bytes left
[   53.889249] netem: version 1.3
[   61.170353] ip (2356) used greatest stack depth: 12192 bytes left
[  591.123538] tc (12617) used greatest stack depth: 11936 bytes left