[    2.245196] ip (278) used greatest stack depth: 12360 bytes left
[    2.353698] ip (287) used greatest stack depth: 12344 bytes left
[   54.241101] netem: version 1.3
[  105.332305] ip (2765) used greatest stack depth: 12304 bytes left
[  603.569270] tc (12613) used greatest stack depth: 11936 bytes left