[rrd-users] How to graph full interface graphs

Simon Hobson linux at thehobsons.co.uk
Mon Feb 4 19:50:50 CET 2008

Joe Loiacono wrote:

>The interface graphs I like the best I would describe as 'full'. 
>They include percentages for usage of total available, and they 
>include the peak 5-minute values for inbound and outbound on all 
>graphs other than the 5-minute one itself. Thses preserved paek 
>vaules are printed in magenta and dark green.
>Here's an example: http://ensight.eos.nasa.gov/FlowViewer/sample_full_MRTG.png
>I believe MRTG can produce these, but I can't get to the system that 
>host these graphs to figure out the 'rrdtool graph' command.

Bear in mind that the "max" can be quite misleading when traffic varies a lot.

What you need to do is :

create your rrd with RRA functions of both AVERAGE and MAX - you MUST 
store both to be able to draw the graph.

Then it's as simple as :

Draw area for average
Draw line for max

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