From netramet-owner  Thu Oct 11 03:01:44 2001
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Date: Wed, 10 Oct 2001 10:00:45 -0500
From: Sandra Salas <[email protected]>
Subject: scalability of netramet
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Hi,

I have installed the netramet   in a network lab,   and everything is working  excellent.
I am wondering if you have information about performance and scalability of the netramet.
I know  that this depends as large as the network, but in your experience, do you have
any interesting data about this? Something that helps me to plan the type of hardware that I need.

I really appreciate your help.

thanks in advance!.











From netramet-owner  Sat Oct 13 00:49:44 2001
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Sandra Salas wrote:

>  Hi,
>
> I have installed the netramet   in a network lab,   and everything is working  excellent.
> I am wondering if you have information about performance and scalability of the netramet.
> I know  that this depends as large as the network, but in your experience, do you have
> any interesting data about this? Something that helps me to plan the type of hardware that I need.
>
> I really appreciate your help.
>
> thanks in advance!.


Hi Sandra,


We did some experiments with NeTraMet recently on a 1GHz PC.
With a Debian Linux (2.4.xxx kernel) it handled about 60 thousand
packets per second. This with several rulesets:
* keeping track of usage statistics for some 2000 hosts on the network
* just counting all traffic that went past
* classifying all traffic into 4 different destinations

At the same time it was running a MySql database for storing results and
an Apache web server (for viewing the results).
If the only ruleset was just counting all traffic and without the
database or web server running, it could do (IIRC) over 90 thousand
packets per second.

Cheers,

Remco Poortinga
Application Engineer
Telematica Instituut
Enschede, NL


From netramet-owner  Mon Oct 15 09:39:42 2001
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From: Nevil Brownlee <[email protected]>
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Subject: Re: scalability of netramet
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Hello Sandra:

> I have installed the netramet   in a network lab,   and everything is working  excellent.
> I am wondering if you have information about performance and scalability of the netramet.
> I know  that this depends as large as the network, but in your experience, do you have
> any interesting data about this? Something that helps me to plan the type of hardware that I need.

I've been using high-speed versions of NeTraMet (the code is available
in beta version 4.4b10) with Dag interface cards on high-speed links.
On an oc12 (622 Mbps) link NeTraMet can easily handle a steady link
load of around 70 Mbps in each direction, while running three rulesets,
one of which is building tables of streams inside flows.

I've also been doing some development work on an OC48 NeTraMet -
this can handle a total load of around 350 Mbps while building
tables of streams (around 90,000 active streams on average).  Lots
more work to be done on this yet though.

Overall, I believe that NeTraMet can handle the packet load,
the real questions are 'how complex are the rulesets you need to use?'
and 'how many flows do you need to read information about at what
intervals?'

Cheers, Nevil

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