[    1.877620] ip (260) used greatest stack depth: 12320 bytes left
[    2.237752] ip (288) used greatest stack depth: 12272 bytes left
[   56.801266] netem: version 1.3
[  545.023859] ip (13291) used greatest stack depth: 12128 bytes left
[  616.517141] tc (15595) used greatest stack depth: 11896 bytes left