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Re: [Linux Diffserv] prio and weight



Hi Alex,

Can you pls. tell me which scheduling mechanism you are using in order to
schedule the packets.
As if you are using PRR then it is true what you are telling. But if  you
are using the WRR then it is different.
In case of CBQ also the scenario mentioned by you is valid..

Regards,
Tajinder

----- Original Message -----
From: "Alexandre Carlos" <alexandre@redes.unb.br>
To: "Tajinder Singh Gulati" <tajinder.gulati@wipro.com>
Sent: Monday, January 13, 2003 7:22 PM
Subject: Re: [Linux Diffserv] prio and weight


> Tajinder,
>
> In my case i configured EF class with 2Mbps of rate and 200Kbits of
weight,
> and BE class with 4 Mbps os rate and 400Kbits of weight. So because of the
> weight the BE class r sending more packets than EF class. So because the
> priority of  EF class is figher than BE, BE only will have a chance to
send
> its packets when there is no more packets on EF queue.
>
> Can i say that?
>
> Alex
>
> ----- Original Message -----
> From: "Tajinder Singh Gulati" <tajinder.gulati@wipro.com>
> To: "Alexandre Carlos de Oliveira" <alexandre@redes.unb.br>;
> <diffserv-general@lists.sourceforge.net>
> Sent: Monday, January 13, 2003 7:27 AM
> Subject: Re: [Linux Diffserv] prio and weight
>
>
> > Hello Alex,
> >
> > In Diffserv, each class is given a priority and a weightage. The
weightage
> > describes the number of bytes of packets that can be  transmitted by
that
> > class in
> > that specified period of time.
> > As u must be knowing that CBQ is a combination of WRR and PRR scheduling
> > mechanism. In CBQ
> > a class having highest priority is allowed to send packet first
according
> to
> > its weightage and then scheduling is done from second priority class
> > according to its weightage. Thats how it goes!!
> > As u have asked that
> > If class A have higher prio then classe B but class A have lower weight,
> >  who would send more packets?
> > Obviously class B will send more packets.
> > I hope it must be cleared if any query is there pls. do get back....
> > Regards,
> > Tajinder
> >
> > ----- Original Message -----
> > From: "Alexandre Carlos de Oliveira" <alexandre@redes.unb.br>
> > To: <diffserv-general@lists.sourceforge.net>
> > Sent: Monday, January 13, 2003 10:53 AM
> > Subject: [Linux Diffserv] prio and weight
> >
> >
> > > Hi all
> > >
> > > I didn't quite undestand the concept of prio and weight. The higher
the
> > > prio more packets r a class allowed to send and the higher the wieght
> more
> > > packets r a classe allowed to send, as well, is that right? So wich
one
> is
> > > the most important?
> > > If classe A have higher prio then classe B but class A have lower
> weight,
> > > who would send more packets?
> > > Whats the relation between grio and prio, because on the draft linux
on
> > > diffserv it says that prio identifies the virtual queue priority if
> > > "gio"was set in the general parameters. I don't have grio set in the
> > > general parameters, so would prio works? Can some give an example of
haw
> > > do i set the grio parameter, because i din't find any.
> > > Regards
> > >
> > > Alex
> > >
> > >
> > >
> > >
> > > -------------------------------------------------------
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> > > _______________________________________________
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> >
> >
> >



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