[    2.342435] ip (270) used greatest stack depth: 12320 bytes left
[   31.932860] ip (1229) used greatest stack depth: 12272 bytes left
[   54.951639] netem: version 1.3
[   77.875773] ip (2359) used greatest stack depth: 12016 bytes left
[  607.369099] tc (11917) used greatest stack depth: 11872 bytes left