[mrtg] Re: Cutting the graph at a specific value

Koelstra, J. (Jan) JKoelstra at MINSZW.NL
Thu Apr 14 09:51:51 MEST 2005


Hi,

With straigth MRTG from version 2.11.0 you can use 'LogScale' and/or 'SecondMean'. Both can be used to deal with spikes in graphs.
For details see: http://people.ee.ethz.ch/~oetiker/webtools/mrtg/mrtg-reference.html

I'm not familiar with the 14all.cgi front-end, so I cannot tell if there is any options like the ones above.

Hth,

Jan.

-----Original Message-----
From: mrtg-bounce at list.ee.ethz.ch [mailto:mrtg-bounce at list.ee.ethz.ch] On Behalf Of Tim
Sent: Wednesday, April 13, 2005 8:19 PM
To: Guillermo Hechem; mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: Cutting the graph at a specific value


Guillermo Hechem wrote:
> By "ignore" I mean that the backup process just doesn´t appear in the
> graph.
> It´s as if there wasn´t any traffic in the interface at that time.
> What I want is to see that backup traffic, which normally rises to 8 MB, but
> only up to 1 MB, so as to be able to appreciate the rest of the traffic.
>
> Hope it´s clear now.

I have exactly the same problem, and I know exactly what you want to do!

What you mean is that you want to fix the y-axis scale to 0-1MB, and "clip" the graph if it goes off the scale.

Unfortunately, the MRTG guru in work says this cannot be done with straight mrtg, although he thinks it may be possible using rrdtool, but didn't offer a solution :-(

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