[    2.217349] ip (270) used greatest stack depth: 12608 bytes left
[    2.325730] ip (279) used greatest stack depth: 12272 bytes left
[   56.806124] netem: version 1.3
[   74.514842] ip (3154) used greatest stack depth: 12128 bytes left
[  590.609911] tc (15595) used greatest stack depth: 11896 bytes left