Re: [LARTC] Lots amounts of classes to solve the DAP problem

From: Stef Coene <stef.coene@docum.org>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Lots amounts of classes to solve the DAP problem
Date: Tue, 22 Apr 2003 18:52:55 +0000	[thread overview]
Message-ID: <marc-lartc-105103762329433@msgid-missing> (raw)
In-Reply-To: <marc-lartc-105103510025149@msgid-missing>

On Tuesday 22 April 2003 20:10, GoMi wrote:
> Stef, remember the problem about DAP users? i have written a little scrip
> to create 255 classes each for an ip of my segment, what do you think, am i
> mistaken anywhere? I am not sure i am getting the concept right. The idea
> is
> Total BW is lets say 255kbit
>
>                    root 1:0
>
> User 192.168.1.1:
>
>                         1:1 2kbit ceil 255kbit
>                         / \
>                        /   \
>  1kbit ceil 127kbit   1:2  1:4 1kbit ceil 128kbit
>
>                pfifo  1:3  1:5 sfq
>
> User 192.168.1.2
>
>                         1:6 2kbit ceil 255kbit
>                         / \
>                        /   \
>  1kbit ceil 127kbit   1:7  1:8 1kbit ceil 128kbit
>
>                pfifo  1:9  1:10 sfq
>
> And soo on 255 times...
Ok.

> I now the rate of the classes add up to be more than the total BW but since
> i am doing that for 2 ADSL working with multipath (loadbalanding) routing,
> i think there will never be all users using one interface. Dont know if my
> assumption is right..
Nothing bad will hapen if you have wrong rates for the parent.

I have a remark.  You add the class directly to the root class.  It's better 
to add 1 class to the root qdisc and add the other classes to that class.

> To end up i have to set up a hashing table to create all the filters. The
> script to create the structure is the one on the bottom. What do you think?
> Am i going in the right direction or did i just completly missed what you
> were having in mind..? ( I have not set up the hashing table for filters
> yet)
The idea is ok :)
But I can't remember why you give each IP 2 subclasses?  And why they can't 
use the full bandwidth ?

Stef

-- 

stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
     #lartc @ irc.oftc.net

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