Well the fact you are backlogged shows queue length - just default length htb uses in this test is so long it doesn't drop.Andy Furniss wrote:
there is something I'm not able to understand about HTB statistics. Why the qdisc show show how many packets are overlimits but in the classes there are always 0 packets overlimits or dropped?
Overlimits is more a kernel thing then usefull as a traffic control figure and tc qdisc -s .. shows the root 1: htb but tc -s class doesn't.
You can see drops with tc -s class - but the default htb queue is too long in this test. Add a specific queue to the class 1:10 so you can specify length. eg.
tc qdisc add dev eth0 parent 1:10 handle 10: bfifo limit 64k
Thank you for your reply. So there is not a way to know that a specific class is actually shaping the traffic without attaching a qdisc to each class?
If you had more classes they would be shorter and drop.
Adding a queue just lets you choose length - you won't really see any better stats though you see more with tc -s qdisc.
You can also use tc -s class and look at the borrowed/lended counts and see what you can deduce from those.
Andy.
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