From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stef Coene <stef.coene@docum.org>
Date: Sat, 19 Jun 2004 20:36:11 +0000
Subject: Re: [LARTC] priorities + htb
Message-Id: <200406192236.11972.stef.coene@docum.org>
List-Id: <lartc.vger.kernel.org>
References: <20040618085411.GA25143@oasis.frogfoot.net>
In-Reply-To: <20040618085411.GA25143@oasis.frogfoot.net>
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To: lartc@vger.kernel.org

On Friday 18 June 2004 13:12, pljosh wrote:
> U=BFytkownik Abraham van der Merwe napisa=B3:
> > Hi!
> > How does prioritization work when you've got a tree structure, e.g.
> >
> >  +-- class_a rate 64kbit prio 1
> >
> >  |    +-- class_a1 rate 32kbit prio 1
> >  |
> >  |    `-- class_a2 rate 32kbit prio 2
> >
> >  `-- class_b rate 64kbit prio 2
The prio of class class_a is never used and does not matter.

> HTB means: __Hierarchical__ Token Bucket so it is more like this:
> >  (b) all packets matching a1, a2 are prio 1, then a1 is given a higher
> >      priority than a2
> >
> >      (iow, multiple layers of prioritization exist)
>
> But "prio" is used when there is some some unused BW that could be
> splited for borrowing (for classes which have ceil higher than rate).
Htb is used for 2 things:
- class with lowest prio will get the lowest latancy (if and only if this=20
class is not sending more data then the tate)
- class will lowest prio will get the remaining bandwidth from the parent=20
after each child class is sending his rate.

Stef

--=20
stef.coene@docum.org
=A0"Using Linux as bandwidth manager"
=A0 =A0 =A0http://www.docum.org/
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