[    2.229996] ip (270) used greatest stack depth: 12320 bytes left
[    3.748626] ip (381) used greatest stack depth: 12272 bytes left
[   52.955087] netem: version 1.3
[   74.367371] ip (2367) used greatest stack depth: 12128 bytes left
[  602.716777] tc (11927) used greatest stack depth: 11872 bytes left