[    2.383337] ip (278) used greatest stack depth: 12360 bytes left
[    2.509471] ip (287) used greatest stack depth: 12344 bytes left
[   54.532787] netem: version 1.3
[  537.899359] ip (11486) used greatest stack depth: 12304 bytes left
[  589.878919] tc (12619) used greatest stack depth: 11936 bytes left