Re: Why the http response is so slow with Total Control

[Alin Nastac <mrness@technosoft.ro>]

CBQ has a bunch of parameters. If you are new to tc (by the way, it's
traffic control not total control), use cbq.init (from
http://www.freashmeat.net).

Or go to http://lartc.org. This is the must-to-read page regards traffic
control.

wain wen wrote:

> 
>Hi:
> 
>Below is my network topology ( n = 60 ):
> 
>
>internet ----------- linux box --------- PC1
>         ADSL(1024k)           |
>                               |-------- PC2
>                               |
>                               |-------- PCn
> 
>If the linux box only servers as gateway, everything
>is ok.However, boss wants to control the flow of every
>PC, my configuration is :
> 
># tc qdisc list dev eth1   // eth1 is the internal
>interface of linux box which ip is 192.168.0.1
> 
> qdisc sfq 8012: quantum 1514b perturb 15sec 
> qdisc sfq 8011: quantum 1514b perturb 15sec 
> qdisc sfq 8010: quantum 1514b perturb 15sec 
> qdisc sfq 800f: quantum 1514b perturb 15sec 
> qdisc sfq 800e: quantum 1514b perturb 15sec 
> qdisc sfq 800d: quantum 1514b perturb 15sec 
> qdisc sfq 800c: quantum 1514b perturb 15sec 
> qdisc sfq 800b: quantum 1514b perturb 15sec 
> qdisc sfq 800a: quantum 1514b perturb 15sec 
> qdisc cbq 10: rate 100Mbit (bounded,isolated) prio
>no-transmit
> 
> #tc class list dev eth1
> 
> class cbq 10:11 parent 10:1 leaf 8012: rate 10Mbit
>(bounded,isolated) prio no-transmit
> class cbq 10: root rate 100Mbit (bounded,isolated)
>prio no-transmit
> class cbq 10:256 parent 10:1 leaf 800c: rate 256Kbit
>(bounded,isolated) prio no-transmit
> class cbq 10:1 parent 10: rate 100Mbit prio 5
> class cbq 10:8192 parent 10:1 leaf 8011: rate 8Mbit
>(bounded,isolated) prio no-transmit
> class cbq 10:64 parent 10:1 leaf 800a: rate 64Kbit
>(bounded,isolated) prio no-transmit
> class cbq 10:512 parent 10:1 leaf 800d: rate 512Kbit
>(bounded,isolated) prio no-transmit
> class cbq 10:1024 parent 10:1 leaf 800e: rate 1Mbit
>(bounded,isolated) prio no-transmit
> class cbq 10:4096 parent 10:1 leaf 8010: rate 4Mbit
>(bounded,isolated) prio no-transmit
> class cbq 10:128 parent 10:1 leaf 800b: rate 128Kbit
>(bounded,isolated) prio no-transmit
> class cbq 10:2048 parent 10:1 leaf 800f: rate 2Mbit
>(bounded,isolated) prio no-transmit      
> 
># tc filter list dev eth1
> 
> filter parent 10: protocol ip pref 100 u32 
> filter parent 10: protocol ip pref 100 u32 fh 800: ht
>divisor 1 
> filter parent 10: protocol ip pref 100 u32 fh
>800::800 order 2048 key ht 800 bkt 0 flowid 10:128
>match c0a8003f/ffffffff at 16
> filter parent 10: protocol ip pref 100 u32 fh
>800::801 order 2049 key ht 800 bkt 0 flowid 10:128
>match c0a8003e/ffffffff at 16
> filter parent 10: protocol ip pref 100 u32 fh
>800::802 order 2050 key ht 800 bkt 0 flowid 10:128
>match c0a8000f/ffffffff at 16
> filter parent 10: protocol ip pref 100 u32 fh
>800::803 order 2051 key ht 800 bkt 0 flowid 10:128
>match c0a80011/ffffffff at 16
> ....    
> 
>In my opinion, every IP should have only 128kbits.It
>is true when I download files with ftp.But the http
>response is very very slow,even if
>there is only one person online. When PC1 download
>files , other PC ping the gateway should take more
>than 300 ms .Something must be wrong with my
>configuration. 
>Is the performance problem ? However, the idle is
>about 90%.By the way I boundled the IP and the MAC
>address with arp. 
> 
>Thx.
> 
>
>
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