[LARTC] Limits of CBQ process under Linux

[LARTC] Limits of CBQ process under Linux

[Raffaele]

<PRE>Hi!,
I'm in the process of building a load generator to stress test some networking
equipment for my thesis and I'm wondering how Linux would support doing
egress traffic shaping with on several hundreds(!) virtual ip's defined on
the machine doing the QoS itself.

I have to limit the transmission rate for each virtual ip at, let say, 300Kbit
output
rate.

I currently use CBQ with SFQ queue policy and get good behaviour from the
setup but I only use &lt;10 virtual ip's for now. ( This implies 10 different classes

in CBQ process)

I would like to know if anyone have experience with this kind of setup or if
anyone
does know the limits of the CBQ process with Linux kernels.

Thanks for your help,

Raffaele



--
_______________________________________________________________________________
Raffaele Brancaleoni                          Email : <A HREF="mailto:s940195@student.ulg.ac.be">s940195@student.ulg.ac.be</A>
Licence en Informatique
Université de Liège - Belgium
_______________________________________________________________________________





</PRE>

[LARTC] Limits of CBQ process under Linux

[bert]

<PRE>On Sat, Oct 28, 2000 at 10:17:08AM +0200, Raffaele Brancaleoni wrote:
&gt;<i> Hi!,
</I>&gt;<i> I'm in the process of building a load generator to stress test some networking
</I>&gt;<i> equipment for my thesis and I'm wondering how Linux would support doing
</I>&gt;<i> egress traffic shaping with on several hundreds(!) virtual ip's defined on
</I>&gt;<i> the machine doing the QoS itself.
</I>
You should probably ask this on netdev (<A HREF="mailto:netdev@oss.sgi.com">netdev@oss.sgi.com</A>). However, I've
seen the code and I know the quality of Jamal and Alexeys work, I would
suspect that Linux will not ever be your bottleneck.

Lots of places use hashtables to speed up processing. I got mail from a guy
who did really incredible things with Linux and shaping, also with hundreds
of interfaces.

Regards,

bert hubert

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