Hi all,
I have managed some CBQ class like :
tc class add dev eth0 parent 10:1 classid 10:100 cbq bandwidth 1920KBit rate 784 KBit allot 1514 weight 1 Kbit prio 8 maxburst 20 avpkt 1000 bounded
It works fine, but I noticed that the rate precision is not very good (despite the bounded parameter) :
784 kBit => 96 KBytes/s (theoric) but 130-140 KBytes/s in reality 512 kBit => 64 KBytes/s (theoric) but 80-90 KBytes/s in reality 256 kBit => 32 KBytes/s (theoric) but 33-34 KBytes/s in reality
At low rate (< 256k), it seems good but not at higher rate.
Is this problem coming from my parameters (weight, prio, ...) or is it a known problem with CBQ ?
Try using tbf or something as a leaf qdisc.
Marian Jancar
