[rrd-users] displaying graphs which often overlap

Rick Jones rick.jones2 at hp.com
Mon May 9 20:16:09 CEST 2011

On Mon, 2011-05-09 at 01:40 +0300, Martin T wrote:
> I'm monitoring battery temperatures of three uninterruptible power
> supplies. All three are usually 35C- very seldom the temperature
> increases or decreases a degree or two for a short period of time. So
> as you can imagine, I have three lines overlapped so basically it
> looks like I'm monitoring only one device. It's not some sort of
> serious problem or something, but I was just wondering, are there some
> clever techniques to display/generate graphs in such situations?

Use CDEFs (assuming I've parsed the rrdtutorial manpage correctly) to
shift one of the three up by 5, a second down by 5 and add a comment to
the graph to that effect?  Think of it as a poor-mans three-y-axis

rick jones

> regards,
> martin
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