Re: [LARTC] htb2 -> htb3 problems

[Michael Vasilenko <acid@dg.net.ua>]

devik (devik@cdi.cz) wrote:
> I see you have cburst 0 ! It is not allowed
> and is described in docs. What was commands to
> create the classes ?

 
/sbin/tc.3 qdisc add dev eth0 root handle 1:0 htb default 2500 r2q 100
/sbin/tc.3 class add dev eth0 parent 1:0 classid 1:1 htb rate 200mbit ceil 200mbit quantum 200000
/sbin/tc.3 class add dev eth0 parent 1:0 classid 1:2 htb rate 200mbit ceil 200mbit quantum 200000
/sbin/tc.3 class add dev eth0 parent 1:1 classid 1:3500 htb rate 10Mbit ceil 10Mbit burst 2048b cburst 1
/sbin/tc.3 qdisc add dev eth0 parent 1:3500 handle 3500: sfq perturb 5
/sbin/tc.3 class add dev eth0 parent 1:2 classid 1:5500 htb rate 20Mbit ceil 20Mbit burst 2048b cburst 1 quantum 60000
/sbin/tc.3 qdisc add dev eth0 parent 1:5500 handle 5500: sfq perturb 5
/sbin/tc.3 filter add dev eth0 parent 1:0 protocol ip prio 50 handle 3500 fw classid 1:3500
/sbin/tc.3 filter add dev eth0 parent 1:0 protocol ip prio 50 handle 5500 fw classid 1:5500



tc.3 -V
tc utility, iproute2-ss020116

> On Tue, 6 Apr 2004, Michael Vasilenko wrote:
> 
> > devik (devik@cdi.cz) wrote:
> > > > > I suppose the drop you see is CPU bound ? Did you profiled it
> > > > > again ?
> > > >
> > > > No, CPU is about times more in idle state in htb3, and
> > > > 5x lowest data rate. AFAIK, htb3 scheduler is faster, so that is the
> > > > reason of moving to htb3.
> > >
> > > ok then it is config issue probably. you should pin it down
> > > to smallest possible number of classes for test (say up to
> > > 5 classes) and then use tc -s show class ... to see internal
> > > statistics. Look for classes with small (or negative)
> > > tokens or ctokens - these are in throttling state and are
> > > slowing throughtput - then think if it is ok ..
> >
> > ok
> > I'm creating root with 200Mbit
> > and parent with 10Mbit/1Mbit
> >
> >
> > class htb 1:5500 parent 1:2 leaf 5500: prio 0 quantum 131072 rate 10Mbit ceil 12Mbit burst 2Kb/8 mpu 0b cburst 0b/8 mpu 0b level 0
> >  Sent 25443954 bytes 17155 pkts (dropped 0, overlimits 0)
> >  rate 143050bps 97pps backlog 25p
> >  lended: 17130 borrowed: 0 giants: 0
> >  tokens: 335 ctokens: -787
> >
> > class htb 1:1 root rate 200Mbit ceil 200Mbit burst 263690b/8 mpu 0b cburst 263690b/8 mpu 0b level 7
> >  Sent 482570 bytes 8712 pkts (dropped 0, overlimits 0)
> >  rate 2723bps 49pps
> >  lended: 0 borrowed: 0 giants: 0
> >  tokens: 8241 ctokens: 8241
> >
> > class htb 1:2 root rate 200Mbit ceil 200Mbit burst 263690b/8 mpu 0b cburst 263690b/8 mpu 0b level 7
> >  Sent 25406104 bytes 17130 pkts (dropped 0, overlimits 0)
> >  rate 144147bps 98pps
> >  lended: 0 borrowed: 0 giants: 0
> >  tokens: 8195 ctokens: 8195
> >
> > class htb 1:3500 parent 1:1 leaf 3500: prio 0 quantum 13107 rate 1Mbit ceil 1Mbit burst 2Kb/8 mpu 0b cburst 0b/8 mpu 0b level 0
> >  Sent 482570 bytes 8712 pkts (dropped 0, overlimits 0)
> >  rate 2739bps 49pps
> >  lended: 8712 borrowed: 0 giants: 0
> >  tokens: 12501 ctokens: -294
> >
> >
> > so, rate is 1,2Mbit
> > and what is meaning of negative ctokens?
> >
> > > >From data you send one can't decide what's bad. In any case
> > > and as I said before, behavioue changed a bit so that results
> > > can be a bit different a may need tc script changes.
> > >
> > > devik
> > >
> > > _______________________________________________
> > > LARTC mailing list / LARTC@mailman.ds9a.nl
> > > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
> >
> > --
> > Michael Vasilenko
> >
> >
> 
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-- 
Michael Vasilenko
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