[LARTC] HTB is losing packets ?

[LARTC] HTB is losing packets ?

[Dumitrache Ionut]

Hello all,


   I have using htb for last 10-12 months to manage the bandwidth share. 
Until last month everything was ok, but now after a kernel upgrade (from 
2.4.20 to 2.4.26 because a kernel bug that generate a oops) the Linux router 
is droping packets. It is weird because the "tc -s class ls dev eth1" (in the 
class I monitor) reports no packet drop, the "tc -s qdisc ls dev eth1" 
reports no packet drop (in the qdisc attached to class I monitor) and even 
the "ifconfig" reports no packet drop. 
   My htb configuration consist of more than 150 classes with rates from 1.5 
kbps to 64 kbps and ceils from 8 kbps to 170 kbps. Every class have a sfq 
qdisc attached. The total bandwidth is 2 Mbps. All clases/qdisc are created 
using Stef Coene's QoS scripts. My hardware is a Dell PIV 2GHz with 512MB RAM 
and I use 2 eepro100 (Intel 82555 rev4) nics. 
   The same problem appear with 2.4.24, 2.6.8 kernels and with rtl8139 nics 
and all cables and switch ports changed.

Thanks.


 
  
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Re: [LARTC] HTB is losing packets ?

[George Alexandru Dragoi]

Well, similar things happened on a machine with 2.4.26, with about 300
classes (for 150 users with different cir/mir for metro/extern). I
remade the classes and i applyed fw filters instead of u32, and now it
works very well on 2.4.26.


On Thu, 28 Oct 2004 15:22:42 +0200, Dumitrache Ionut <dionut@tim.ro> wrote:
> 
> Hello all,
> 
>    I have using htb for last 10-12 months to manage the bandwidth share.
> Until last month everything was ok, but now after a kernel upgrade (from
> 2.4.20 to 2.4.26 because a kernel bug that generate a oops) the Linux router
> is droping packets. It is weird because the "tc -s class ls dev eth1" (in the
> class I monitor) reports no packet drop, the "tc -s qdisc ls dev eth1"
> reports no packet drop (in the qdisc attached to class I monitor) and even
> the "ifconfig" reports no packet drop.
>    My htb configuration consist of more than 150 classes with rates from 1.5
> kbps to 64 kbps and ceils from 8 kbps to 170 kbps. Every class have a sfq
> qdisc attached. The total bandwidth is 2 Mbps. All clases/qdisc are created
> using Stef Coene's QoS scripts. My hardware is a Dell PIV 2GHz with 512MB RAM
> and I use 2 eepro100 (Intel 82555 rev4) nics.
>    The same problem appear with 2.4.24, 2.6.8 kernels and with rtl8139 nics
> and all cables and switch ports changed.
> 
> Thanks.
> 
> --
> TIMnet webmail (webmail.tim.ro)
> 
> _______________________________________________
> LARTC mailing list / LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
> 


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Re: [LARTC] HTB is losing packets ?

[Dumitrache Ionut]

Hello,

    Thanks for the quick response George. I will switch to fw filters. I 
know, there are many advantages, but are the fw filters ok for massive 
classifing ? How many classes and how much bandwidth have you ?


Thanks again,
Ionut

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Re: [LARTC] HTB is losing packets ?

[George Alexandru Dragoi]

I have more than 600 classes, 4 classes per each client (down/up for
both metro/extern). I can't be sure if my problem got solved because i
switched to fw or because the htb trees got a little changed, i can
only say it works like a charm, for about 30mbit parent class,
mipclasses, 1700 routes written by bgp. The system is load at 20%
usually, and sometimes more when the rrdtool is doing his job. It is
true the machine is an Intel 3G with dual thread hehe :)


On Thu, 28 Oct 2004 16:56:23 +0200, Dumitrache Ionut <dionut@tim.ro> wrote:
> Hello,
> 
>     Thanks for the quick response George. I will switch to fw filters. I
> know, there are many advantages, but are the fw filters ok for massive
> classifing ? How many classes and how much bandwidth have you ?
> 
> Thanks again,
> Ionut
> 
> 


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Re: [LARTC] HTB is losing packets ?

[Dumitrache Ionut]

Tnanks again. I will try to switch the filters :(((

Ionut
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