Re: htb2 -> htb3 problems

Linux Advanced Routing and Traffic Control

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Martin Devera (devik@xxxxxx) wrote:
> > > remove cburst 1
> >
> > thanks!
> >
> > class htb 1:5500 parent 1:2 leaf 5500: prio 0 quantum 65536 rate 5Mbit
> > ceil 5Mbit burst 20Kb/8 mpu 0b cburst 8151b/8 mpu 0b level 0
> >  Sent 45107618 bytes 42138 pkts (dropped 0, overlimits 0)
> >  rate 608617bps 548pps backlog 40p
> >  lended: 42098 borrowed: 0 giants: 0
> >  tokens: 3908 ctokens: -11502
> >
> > but I see only 330Kbytes/sec flow (half of 5Mbit rate)
> 
> >From above I see rate 608617bps = 4.7MBit. Probably it will settle down
> after some while. I suspect there is problem in your way of measuring the
> rate. Also you can deliberately increase (c)burst to more than default,
> say to 20kB - the larger the burst it the more insensitive to CPU load
> it is ...

OK, I removed all manual settings of burst/cburst, and it works just
fine. htb3 rocks! 30%/90% CPU Usage on 80Mbit stream with >500 classes
on htb3/htb2 (P4 2Ghz, 2.4.25 kernel with APIC, e1000 NIC)

-- 
Michael Vasilenko
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