[LARTC] BandWidth

[LARTC] BandWidth

[Vitor Carlos Flausino]

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Hi!
I'm using class based queueing for testing how same applications work
with low bandwidth. So what I did was give this commands:

tc qdisc add dev eth0 root handle 10: cbq bandwidth 4kbit avpkt 1000
tc qdisc add dev eth1 root handle 20: cbq bandwidth 4kbit avpkt 1000

tc class add dev eth0 parent 10:0 classid 10:1 cbq bandwidth 4kbit
rate 4kbit allot isolated
tc class add dev eth1 parent 20:0 classid 20:1 cbq bandwidth 4kbit
rate 4kbit allot isolated


tc qdisc add dev eth0 parent 10:0 sfq quantum 1514b
tc qdisc add dev eth1 parent 20:0 sfq quantum 1514b

tc filter add dev eth0 parent 10:0 protocol ip u32 match ip dst
192.0.0.0/8 flowid 10:1
tc filter add dev eth1 parent 20:0 protocol ip u32 match ip dst
57.0.0.0/8 flowid 20:1

(has you can see I'm testing with bandwidth = 4k)

Now, WHY DOES NOT WORK? It seams that it using all 100Mbits




  ____________                             ____________
 (            )                           (            )
(57.227.234.0/23)--------|Linux|---------(192.168.76.0/24)
  (____________)       eth0    eth1        (____________)
                  57.227.235.12
                            192.168.76.1

thanks
-vcf

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Re: [LARTC] BandWidth

[Vitor Carlos Flausino]

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Stef Coene wrote:

> Try this :
> tc qdisc add dev eth0 root handle 10: cbq bandwidth 10mbit avpkt 1000>
>                                                     ~~~~~~
> tc class add dev eth0 parent 10:0 classid 10:1 cbq bandwidth 10mbit rate
>                                                              ~~~~~~
> rate 4kbit allot bounded isolated
>                  ~~~~~~~
>
> Staf
>
> Vitor Carlos Flausino wrote:
> >
> > Hi!
> > I'm using class based queueing for testing how same applications work
> > with low bandwidth. So what I did was give this commands:
> >
> > tc qdisc add dev eth0 root handle 10: cbq bandwidth 4kbit avpkt 1000
> > tc qdisc add dev eth1 root handle 20: cbq bandwidth 4kbit avpkt 1000
> >
> > tc class add dev eth0 parent 10:0 classid 10:1 cbq bandwidth 4kbit
> > rate 4kbit allot isolated
> > tc class add dev eth1 parent 20:0 classid 20:1 cbq bandwidth 4kbit
> > rate 4kbit allot isolated
> >
> > tc qdisc add dev eth0 parent 10:0 sfq quantum 1514b
> > tc qdisc add dev eth1 parent 20:0 sfq quantum 1514b
> >
> > tc filter add dev eth0 parent 10:0 protocol ip u32 match ip dst
> > 192.0.0.0/8 flowid 10:1
> > tc filter add dev eth1 parent 20:0 protocol ip u32 match ip dst
> > 57.0.0.0/8 flowid 20:1
> >

Thanks but it did not solve.... It still works 100mbit

tc qdisc add dev eth0 root handle 10: cbq bandwidth 100mbit avpkt 1000
tc qdisc add dev eth1 root handle 20: cbq bandwidth 100mbit avpkt 1000

tc class add dev eth0 parent 10:0 classid 10:1 cbq bandwidth 100mbit rate
4kbit allot 1514 bounded isolated

tc class add dev eth1 parent 20:0 classid 20:1 cbq bandwidth 100mbit rate
4kbit allot 1514 bounded isolated

tc qdisc add dev eth0 parent 10:0 sfq quantum 1514b perturb 15
tc qdisc add dev eth1 parent 20:0 sfq quantum 1514b perturb 15

tc filter add dev eth0 parent 10:0  protocol ip u32 match ip dst
192.0.0.0/8 flowid 10:1
tc filter add dev eth1 parent 20:0  protocol ip u32 match ip dst 57.0.0.0/8
flowid 20:1

-vcf

[-- Attachment #2: Card for Vitor Carlos Flausino --]
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n:Flausino;Vitor
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email;internet:vflausino@pga.pt
title:Eng
adr;quoted-printable:;;Aeroporto de Lisboa=0D=0ARua C=3BEdf 70;Lisbon;;1749-078 Lisbon;Portugal
x-mozilla-cpt:;0
fn:Vitor Carlos Flausino
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[LARTC] bandwidth

[me here]

hi all,
how r bandwidth allocated in cable modem internet
access technology when new subscribers are added or
how is it allocated basically?
could someone help me on this
vijaya

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[LARTC] Bandwidth

[lartc]

I am really curious how loaded (current and average upload/download speed) is your network 
and how fast connection you have.
(This question is more for more networked enviroments rather than single users).

We just bought 8mbit/s line and the load wont get higher than 200KB/s (~1.6Mbit/s) (according 
to MRTG)
There are ~250 users using this line. (shaped from 32kbit/s to 2mbit/s)

I am using MRTG to measure the load.
I though MRTG has gone crazy showing 200KB/s so i decided to download large amount of data.
And no, the mrtg was right, i was downloading at 600KB/s and MRTG showed the same.

I am confused how it is possible.


P.Krumins
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 www.apollo.lv

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Re: [LARTC] Bandwidth

[David Boreham]

You need to ensure that you are downloading from a server
capable of serving 8Mbits (most are not). 

In the continental USA I use gatekeeper.dec.com,
which is very lightly loaded (nobody remembers it these
days) and has at least an OC-3 connection.
I have seen 40Mbits/s via FTP from this machine.


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RE: [LARTC] Bandwidth

[Morten Isaksen]

We are running with an 8 Mbit WAN link and are using wrr to shape the
traffic between 800 users. This works fine and all the bandwith are en
use most of the time.

Please supply some more details of your configuration, if you want more
help.

--
Morten Isaksen
misak@aub.dk - http://www.aub.dk/~misak
 

> -----Original Message-----
> From: lartc-admin@mailman.ds9a.nl [mailto:lartc-admin@mailman.ds9a.nl]
On
> Behalf Of lartc@e-apollo.lv
> Sent: 9. december 2002 21:24
> To: LARTC@mailman.ds9a.nl
> Subject: [LARTC] Bandwidth
> 
> I am really curious how loaded (current and average upload/download
speed)
> is your network
> and how fast connection you have.
> (This question is more for more networked enviroments rather than
single
> users).
> 
> We just bought 8mbit/s line and the load wont get higher than 200KB/s
> (~1.6Mbit/s) (according
> to MRTG)
> There are ~250 users using this line. (shaped from 32kbit/s to
2mbit/s)
> 
> I am using MRTG to measure the load.
> I though MRTG has gone crazy showing 200KB/s so i decided to download
> large amount of data.
> And no, the mrtg was right, i was downloading at 600KB/s and MRTG
showed
> the same.
> 
> I am confused how it is possible.
> 
> 
> P.Krumins
>  ____________________________________________________________
> 
>  Re»istrº un lieto savu Apollo e-pastu www.e-apollo.lv
> 
>  www.apollo.lv
> 
> _______________________________________________
> LARTC mailing list / LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

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Re: [LARTC] Bandwidth

[Steen Suder, privat]

Morten Isaksen wrote:
> We are running with an 8 Mbit WAN link and are using wrr to shape the
> traffic between 800 users. This works fine and all the bandwith are en
> use most of the time.

Sorry to break in to the thread like this, but...

1. Is it one single 8/8Mb link?
2. Hows the tc configuration? (Like the example in the wrr-package?)
3. Are there any latency-problems?
4. What measures has been taken to ensure low latency?

<SNIP>

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RE: [LARTC] Bandwidth

[Morten Isaksen]

> -----Original Message-----
> From: Steen Suder, privat [mailto:sfs_lartc@suder.dk]
> Sent: 9. december 2002 22:16
> To: Morten Isaksen
> Cc: LARTC@mailman.ds9a.nl
> Subject: Re: [LARTC] Bandwidth
> 
> Morten Isaksen wrote:
> > We are running with an 8 Mbit WAN link and are using wrr to shape
the
> > traffic between 800 users. This works fine and all the bandwith are
en
> > use most of the time.
> 
> Sorry to break in to the thread like this, but...
> 
> 1. Is it one single 8/8Mb link?

Yes. We do have 2 1 Mbit ADSL lines also, but they are only used for P2P
traffic (like Kazaa, Napster, ..).


> 2. Hows the tc configuration? (Like the example in the wrr-package?)

I have used the standard script in the wrr package, with some minor
changes like changed ..cbq bandwidth 10Mbit.. to .. cbq bandwidth
100Mbit..

> 3. Are there any latency-problems?
> 4. What measures has been taken to ensure low latency?

Right now our WAN link is at 96% and I have a latency about 10 ms to a
server 8 hops away (through the Danish DIX). So no, we don't have any
latency problems.

--
Morten Isaksen
misak@aub.dk - http://www.aub.dk/~misak

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