LinuxQuestions.org - Quantum of class xxxxx is too big; consider r2q change??

Keep getting this error upon running my tc script:

Code:

tc qdisc del dev vpnftp root



tc qdisc add dev vpnftp root handle 1: htb default 10 r2q 10

tc class add dev vpnftp parent 1: classid 1:1 htb rate 21.3mbit burst 2662500

tc class add dev vpnftp parent 1:1 classid 1:10 htb rate 18.3mbit ceil 21.3mbit burst 2262500

tc class add dev vpnftp parent 1:1 classid 1:11 htb rate 3mbit burst 375000



tc filter add dev vpnftp protocol ip parent 1: prio 1 u32 match ip dst 10.11.12.14/32 flowid 1:11



tc qdisc add dev vpnftp parent 1:10 handle 10: sfq perturb 10

tc qdisc add dev vpnftp parent 1:11 handle 11: sfq perturb 10

Can find very little on what the recommended value of r2q should be, and how to calculate it; various guides randomly mention setting it to "10", which i have done with no change in the error. The consensus is that it can be ignored??

Ideas?