Re: [LARTC] htb parameter problem

["liang jian" <liang_7902@yahoo.com.cn>]

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Sorry,I means that: 
I configure My out interface bandwidth 10kbps. 
tc qdisc del dev eth1 root
tc qdisc add dev eth1 root handle 30: htb
tc class add dev eth1 parent 30: classid 30:1 htb rate 10kbps ceil 10kbps
tc class add dev eth1 parent 30:1 classid 30:10 htb rate 5kbps ceil 5kbps
tc class add dev eth1 parent 30:10 classid 30:100 htb rate 2.5kbps ceil 5kbps
tc class add dev eth1 parent 30:100 classid 30:1000 htb rate 1.25kbps ceil 5kbps prio 1
tc qdisc add dev eth1 parent 30:1000 sfq
tc class add dev eth1 parent 30:100 classid 30:2000 htb rate 1.25kbps ceil 5kbps prio 2
tc qdisc add dev eth1 parent 30:2000 sfq
tc class add dev eth1 parent 30:10 classid 30:200 htb rate 2kbps ceil 5kbps
tc qdisc add dev eth1 parent 30:200 sfq
tc class add dev eth1 parent 30:1 classid 30:20 htb rate 5kbps ceil 10kbps
tc qdisc add dev eth1 parent 30:20 sfq
tc filter add dev eth1 parent 30: protocol ip prio 1  handle 8 fw classid  30:20
tc filter add dev eth1 parent 30: protocol ip prio 1  handle 9 fw classid  30:1000
tc filter add dev eth1 parent 30: protocol ip prio 1  handle 10 fw classid  30:2000

tc -s class ls dev eth1 
class htb 30:1 root rate 80Kbit ceil 80Kbit burst 1701b cburst 1701b
 Sent 3241503 bytes 55558 pkts (dropped 0, overlimits 0)
 lended: 0 borrowed: 0 giants: 0
 tokens: 132320 ctokens: 132320 
class htb 30:10 parent 30:1 rate 40Kbit ceil 40Kbit burst 1650b cburst 1650b
 Sent 3235253 bytes 55462 pkts (dropped 0, overlimits 0)
 lended: 25964 borrowed: 0 giants: 0
 tokens: 256479 ctokens: 256479 
class htb 30:100 parent 30:10 rate 20Kbit ceil 40Kbit burst 1624b cburst 1650b
 Sent 3235253 bytes 55462 pkts (dropped 0, overlimits 0)
 lended: 12826 borrowed: 25964 giants: 0
 tokens: 504639 ctokens: 256479 
class htb 30:1000 parent 30:100 leaf 802f: prio 1 rate 10Kbit ceil 40Kbit burst 1611b cburst 1650b
 Sent 3025299 bytes 52329 pkts (dropped 0, overlimits 0)
 lended: 14206 borrowed: 38123 giants: 0
 tokens: 1000960 ctokens: 256479 
class htb 30:2000 parent 30:100 leaf 8030: prio 2 rate 10Kbit ceil 40Kbit burst 1611b cburst 1650b
 Sent 209954 bytes 3133 pkts (dropped 0, overlimits 0)
 lended: 2466 borrowed: 667 giants: 0
 tokens: -317952 ctokens: 243679 
class htb 30:200 parent 30:10 leaf 8031: prio 0 rate 16Kbit ceil 40Kbit burst 1619b cburst 1650b
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 lended: 0 borrowed: 0 giants: 0
 tokens: 647999 ctokens: 264159 
class htb 30:20 parent 30:1 leaf 8032: prio 0 rate 40Kbit ceil 80Kbit burst 1650b cburst 1701b
 Sent 6250 bytes 96 pkts (dropped 0, overlimits 0)
 lended: 96 borrowed: 0 giants: 0
 tokens: 256479 ctokens: 132320

http,https traffic from 30:1000 and ftp,ftp-data traffic from 30:2000 
I download kernel from www.kernel.org use NetAnts.I noted that rate 200kbps!!!!? 
question : 
1. I don't know why that rate of NetAnts(200kbps) > out bandwidth(10kbps). 
2. I think it maybe dropped packets,but nothing to do . 
3. tokens: -317952 ctokens: 243679 what's means about parameters?what's representation positive number or negative number? 
 "Martin A. Brown" <mabrown-lartc@securepipe.com> wrote: : tc class add dev eth1 parent 30:100 classid 30:1000 \
: htb rate 12800kbps ceil 51200kbps prio 1
: tc qdisc add dev eth1 parent 30:1000 sfq

Whoa!! Are you *sure* you mean 12800 kilobytes per second and 51200 kilo
bytes per second? Just double-checking.

This sort of number looks quite similar to what I call a 128k / 512k line.
I would specify these rates as follows:

128kbit and 512kbit

But maybe you really mean:

12800kbit and 51200kbit

Judging from your "tc -s" output, you have a large pipe to the 'net.

: How to do obtain below result:
: I read from www.docum.org have problem about parameter:

Which parameter are you asking about? You don't provide much information
to us about what your question or concern is.

Is quantum the problem? Or burst, cburst.

: Frist :
:
: The same story goes for ceil and cburst, you don't want the class to
: send more packets then it's ceil allows. So removing the cburst is a
: good choice for that case.
:
: Second:
:
: Packets that are sent when the class is allowed to send, are still
: matched against rate/ceil/burst/cburst. So a big quantum will not
: create bursts if you don't allow it with the burs/cburst parameters.

Help us understand what your question is, Liang. Thank you,

-Martin

-- 
Martin A. Brown --- SecurePipe, Inc. --- mabrown@securepipe.com

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