From: Stef Coene <stef.coene@docum.org>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] HTB and theory
Date: Thu, 12 Dec 2002 10:49:56 +0000 [thread overview]
Message-ID: <marc-lartc-103969031917322@msgid-missing> (raw)
In-Reply-To: <marc-lartc-103945416224487@msgid-missing>
On Thursday 12 December 2002 09:36, Abraham van der Merwe wrote:
> Hi Stef!
> I think your explanation of "rate of class" in your FAQ is wrong. it
> caught me as well, but from devik's faq page
> (http://luxik.cdi.cz/~devik/qos/htb/htbfaq.htm):
>
> ------------< snip <------< snip <------< snip <------------
> What if sum of child rates is greater than parent rate ?
>
> Then interesting things can happen. Total rate delivered by children can be
> higher that parent's rate (thus its rate is not respected). However when
> sum of actual child rates are under parent's rate then borrowing will occur
> like in regular case.
>
> ------------< snip <------< snip <------< snip <------------
>
> Thus, if sum (rate of childs) > parent rate, then the parent rate is _not
> respected_.
:)
Devik is right, I'm wrong. Do you know why I was convinced that my rule was
OK? Because I always followed my own rules :)
I did some small tests :
ceil rate
1 200 200
\- 10 200 100
\- 100 200 100
\- 101 200 100
\- 20 200 100
Traffic in 100, 101 and 20 : each gets 67 (33%)
Parent rate (10) is not respected otherwise 10 should share 50% with
20.
Traffic in 100 and 20 : each gets 100 (50%)
If you respect "sum (rate of childs) = parent rate" it works like expected :
ceil rate
1 200 200
\- 10 200 100
\- 100 200 50
\- 101 200 50
\- 20 200 100
Traffic in 100, 101 and 20 : 20 gets 100 (50%), 101 50 (25%) and 101 50 (25%).
Traffic in 100 and 20 : each gets 100 (50%)
Conclusion : if you want to know how traffic will be shaped, you have to
follow some basic rules.
I will update docum.org tonight.
Stef
--
stef.coene@docum.org
"Using Linux as bandwidth manager"
http://www.docum.org/
#lartc @ irc.oftc.net
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next prev parent reply other threads:[~2002-12-12 10:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-09 17:14 [LARTC] HTB and theory Catalin Bucur
2002-12-09 18:22 ` Stef Coene
2002-12-09 20:27 ` Catalin Bucur
2002-12-09 21:22 ` Stef Coene
2002-12-09 21:45 ` Catalin Bucur
2002-12-09 22:18 ` Abraham van der Merwe
2002-12-10 12:33 ` Stef Coene
2002-12-10 12:40 ` Stef Coene
2002-12-10 13:28 ` Abraham van der Merwe
2002-12-10 21:23 ` Stef Coene
2002-12-12 8:36 ` Abraham van der Merwe
2002-12-12 10:49 ` Stef Coene [this message]
2002-12-12 11:19 ` Abraham van der Merwe
2002-12-12 18:32 ` Stef Coene
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