[152646] in North American Network Operators' Group
Re: Network diagram app that shows realtime link utilizatin
daemon@ATHENA.MIT.EDU (David Miller)
Fri May 4 22:28:55 2012
Date: Fri, 04 May 2012 22:28:34 -0400
From: David Miller <dmiller@tiggee.com>
To: nanog@nanog.org
In-Reply-To: <4FA45DF1.3030302@mompl.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 5/4/2012 6:53 PM, Jeroen van Aart wrote:
> Anurag Bhatia wrote:
>> I have been using Zenoss quite a bit. It does not shows exact real time
>> stat of interface but close to real time + it has ton more options for
>
> I remember someone here saying that real time monitoring gives you
> useless results, because if you make the time of measurement small
> enough the utilisation becomes 100%. Measurement of throughput is how
> many times this happens during a particular time interval. I hope I
> remembered right.
>
I think you are referring to this thread -
http://www.gossamer-threads.com/lists/nanog/users/149903
and in particular this quote:
cjp at 0x1 wrote on Feb 16, 2012, 11:25am
As sampling rate approaches zero, so will the "spikyness" of the
graph--ultimately an interface is either sending a frame (*100*%) or
it's
not (0%).
-cjp
Utilisation doesn't "become 100%", instead measured utilisation will
either be 100% or 0% at each interval.
-DMM
