[    1.716024] ip (249) used greatest stack depth: 12400 bytes left
[    2.123289] ip (281) used greatest stack depth: 12352 bytes left
[   51.543171] netem: version 1.3
[   69.797728] ip (2494) used greatest stack depth: 12248 bytes left
[  601.098557] tc (12611) used greatest stack depth: 11936 bytes left