[LARTC] QoS - Ping problem

[Jody Shumaker]

> CLASS="/sbin/tc class add dev $DL parent"
> $CLASS 1: classid 1:1 htb rate 3072Kbit
> $CLASS 1:1 classid 1:10 htb rate 1024Kbit ceil 1024Kbit
> $CLASS 1:1 classid 1:20 htb rate 1536Kbit ceil 2560Kbit
> $CLASS 1:1 classid 1:30 htb rate 512Kbit ceil 1024Kbit
> $CLASS 1:1 classid 1:40 htb rate 512Kbit ceil 1024Kbit
> $CLASS 1:1 classid 1:50 htb rate 512Kbit ceil 1024Kbit
>

For starters you might want to fix these rates.
1024+1536+512+512+512 != 3072

Over allocating may be causing the high number of dropped packets, and
its at least worth fixing before trying anything else. Make sure child
classes rates never add up to greater than the parents rate, in your
case 3072Kbit. Beyond that though I don't see anything obvious. You're
using sfq which what I usually see recommended to increase the queue
size and avoid dropped packets.

- Jody