Hi,
I'm fighting seriously with a most simple HTB setup. I'd like to share
the incoming 64kbps into 5 and 59 for two different machines under NAT.
HTB seems to hold the required limits when ceil is not set (no
borrowing), but when borrowing enabled it seems to share equally rather
then keeping the specified ratio.
My setup is below. A typical output of "tc -s -d qdisc show dev eth1"
and "tc -s -d class show dev eth1" is given. HTB seems to disobey the
specified rate (last entry: rate 40Kbit is set for 1:10 and 16466bps is
measured, while rate 472Kbit is set for 1:11 and rate 20755bps is
measured).
Setting the explicit bandwith (ceil=64kbps everywhere) does not work.
Playing with burst and cburst did not any change.
I've tried CBQ but it seems to do the same... :(
Please help.
Thank you,
Bálint
####################################
# add root HTB disc
run_tc qdisc add dev eth1 root handle 1: htb default 11 r2q 1
# be optimistic about input rates :)
run_tc class add dev eth1 parent 1: classid 1:1 htb rate 10mbit
# setup classes for the local nodes
run_tc class add dev eth1 parent 1:1 classid 1:10 htb rate 5kbps ceil
10mbit prio 2
run_tc class add dev eth1 parent 1:1 classid 1:11 htb rate 59kbps ceil
10mbit prio 1
# create leaves
run_tc qdisc add dev eth1 parent 1:10 sfq perturb 10
run_tc qdisc add dev eth1 parent 1:11 sfq perturb 10
# setup filtering rules : packets going to 192.168.1.2 will go into
class 1:10
run_tc filter add dev eth1 protocol ip parent 1:0 prio 1 u32 match ip
dst 192.168.1.2 flowid 1:10
################################
# tc -s -d qdisc show dev eth1
qdisc sfq 8002: quantum 1514b limit 128p flows 128/1024 perturb 10sec
Sent 3401706 bytes 2650 pkts (dropped 0, overlimits 0)
qdisc sfq 8001: quantum 1514b limit 128p flows 128/1024 perturb 10sec
Sent 2039284 bytes 1363 pkts (dropped 0, overlimits 0)
qdisc htb 1: r2q 1 default 11 dcache 0
deq_util 1/1000000 deq_rate 5 trials_per_deq 0
dcache_hits 0 direct_packets 0
Sent 5440990 bytes 4013 pkts (dropped 0, overlimits 0)
################################
# tc -s -d class show dev eth1
class htb 1:11 parent 1:1 leaf 8002: prio 1 rate 472Kbit ceil 10Mbit
burst 2203b/8 mpu 0b cburst 14704b/8 mpu 0b quantum 60000 level 0
Sent 3284592 bytes 2545 pkts (dropped 0, overlimits 0)
rate 20755bps 15pps
lended: 2545 borrowed: 0 giants: 0 injects: 0
tokens: 28909 ctokens: 9147
class htb 1:1 root prio 0 rate 10Mbit ceil 10Mbit burst 14704b/8 mpu 0b
cburst 14704b/8 mpu 0b quantum 60000 level 3
Sent 5140628 bytes 3786 pkts (dropped 0, overlimits 0)
rate 37374bps 26pps
lended: 888 borrowed: 0 giants: 0 injects: 0
tokens: 9147 ctokens: 9147
class htb 1:10 parent 1:1 leaf 8001: prio 2 rate 40Kbit ceil 10Mbit
burst 1650b/8 mpu 0b cburst 14704b/8 mpu 0b quantum 5120 level 0
Sent 1856036 bytes 1241 pkts (dropped 0, overlimits 0)
rate 16466bps 10pps
lended: 353 borrowed: 888 giants: 0 injects: 0
tokens: -71171 ctokens: 8247