[    1.851296] ip (267) used greatest stack depth: 12320 bytes left
[   20.668952] ip (1115) used greatest stack depth: 12128 bytes left
[   46.122351] netem: version 1.3
[  343.168860] ip (5732) used greatest stack depth: 12048 bytes left
[  539.154860] tc (11903) used greatest stack depth: 11872 bytes left