Re: [LARTC] HTB-link sharing (borrowing) doesn't work

[Martin Devera <devik@cdi.cz>]

Hi it seems as if there is something other throttling
the data - is not it the case that you tested the downloads
thru your 128k internet connection ? If yes then throttling is
done at other side of line. The try to set BAND to 110k for
example ...
devik

On Sun, 14 Apr 2002, Lumir Unzeitig wrote:

> Hello,
> 
> I want to set up typical scenario:
>  entire bandwith  (128kbps from ISP) to devide to 2 parts:
>  1\traffic from   special source IP address
>  2\ rest
> Each part should be capable of "borrowing" from the other in case of less
> traffic on either side.
> 
> 
> I set up according to the HTB manual using a u32 filter and all packets are
> properly divided according to the filter to classes ("Sent" bytes in stats
> increases).
> But the "borrowing" doesn't work. I started 3 FTP sessions: 1 from the
> special IP address, 2 from other places. The 128k bandwitdth is not
> allocated in the right ratio according to HTB config but 1/2 as poor TCP
> sessions.
> If I set up rateÎil (no borrowing) it works OK-every class has got the
> right part of bandwidth.
> 
> It's Linux router, kernel 2.4.16, eth2 is  interface to internal firewall,
> 
> Can you tell me what's wrong?
> Does anybody successfully use scenario with "borrowing" ? If yes, please,
> send me a script or info?
> 
> Thanks
> 
> 
> Lumir Unzeitig
> 
> 
> 
> HTB config
> *******************
> BURST=2
> BAND\x128   #kbps ISP bandwidth
> BAND1\x10   #kbps download from odysseus.fi.muni.cz
> BAND2=$(($BAND-$BAND1))  #rest
> 
>     #Root handle qdisc
>     #*****************
>     tc qdisc add dev eth2 root handle 1: htb default 200
> 
>     #Root class for 128kbps
>     #**********************
>     tc class add dev eth2 parent 1: classid 1:1 htb \
>                             rate ${BAND}kbit ceil ${BAND}kbit burst 2k
> 
> 
>     #Subclass 1:100 download from odysseus.fi.muni.cz
> 
> #-------------------------------------------------------------------------
>       #Subclass definition
>       tc class add dev eth2 parent 1:1 classid 1:100 htb \
>                       rate ${BAND1}kbit ceil ${BAND}kbit burst ${BURST}kbit
>       #Filter
>       tc filter add dev eth2 parent 1: protocol ip prio 1 u32 match ip src
>       147.251.48.205/32 flowid 1:100
> 
>       #qdisc - SFQ
>       tc qdisc add dev eth2 parent 1:100 handle 1000: sfq perturb 10
> 
> 
>     #Subclass 1:200 - rest
>     #--------------------------------
>      #Subclass definition
>      tc class add dev eth2 parent 1:1 classid 1:200 htb \
>                      rate ${BAND2}kbit ceil ${BAND}kbit burst ${BURST}k
> 
>      #qdisc - SFQ
>      tc qdisc add dev eth2 parent 1:200 handle 2000: sfq perturb 10
> ************************
> 
> 
> HTB stats
> *****************
> ---[ eth2: queueing disciplines ]-------------------------
> 
> qdisc sfq 2000: quantum 1514b limit 128p flows 128/1024 perturb 10sec
>  Sent 7383739 bytes 8792 pkts (dropped 0, overlimits 0)
> 
>  qdisc sfq 1000: quantum 1514b limit 128p flows 128/1024 perturb 10sec
>  Sent 3301615 bytes 2285 pkts (dropped 0, overlimits 0)
> 
>  qdisc htb 1: r2q 10 default 200 dcache 0
>  deq_util 1/1000000 deq_rate 23 trials_per_deq 1
>  dcache_hits 0 direct_packets 0
>  Sent 10685354 bytes 11077 pkts (dropped 0, overlimits 0)
> 
> ---[ eth2: configured classes ]---------------------------
> class htb 1:1 root prio 0 rate 128Kbit ceil 128Kbit burst 2Kb/8 mpu 0b
> cburst 1762b/8 mpu 0b quantum 1638 level 3
>  Sent 10686868 bytes 11078 pkts (dropped 0, overlimits 0)
>  rate 14044bps 10pps
>  lended: 2017 borrowed: 0 giants: 0 injects: 0
>  tokens: 26801 ctokens: 12550
> 
> class htb 1:100 parent 1:1 leaf 1000: prio 0 rate 10Kbit ceil 128Kbit burst
> 2Kb/8 mpu 0b cburst 1762b/8 mpu 0b quantum 128 level 0
>  Sent 3301615 bytes 2285 pkts (dropped 0, overlimits 0)
>  rate 4393bps 2pps
>  lended: 500 borrowed: 1785 giants: 0 injects: 0
>  tokens: -829440 ctokens: 12550
> 
> class htb 1:200 parent 1:1 leaf 2000: prio 0 rate 118Kbit ceil 128Kbit burst
> 2Kb/8 mpu 0b cburst 1762b/8 mpu 0b quantum 1510 level 0
>  Sent 7385253 bytes 8793 pkts (dropped 0, overlimits 0)
>  rate 9658bps 8pps
>  lended: 8561 borrowed: 232 giants: 0 injects: 0
>  tokens: 11514 ctokens: 12550
> 
> 
> ---[ eth2: filters for classes ]---------------------------
> 
> filter parent 1: protocol ip pref 1 u32
> filter parent 1: protocol ip pref 1 u32 fh 800: ht divisor 1
> filter parent 1: protocol ip pref 1 u32 fh 800::800 order 2048 key ht 800
> bkt 0 flowid 1:100
>   match 93fb30cd/ffffffff at 12
> 
> ********************
> 
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