I believe the red line shows your actual data points. (keep in mind that RRDs self average over time)

I believe the grey area implies variance [1].

Smokeping uses this as well.

http://oss.oetiker.ch/smokeping/doc/reading.en.html

1. http://en.wikipedia.org/wiki/Variance

On Wed, Sep 24, 2014 at 8:45 AM, Zhenhui Liang <ZhenhuiLiang@eharmony.com> wrote:

Guys,

This might be a general RRD question. So in almost all graphing, we have those shaded color area and solid color line. Although I have a general idea on what they mean, I still want some official explanations regarding their meanings. Thanks.

I attached a cpu usage graph here as an example. We have grey shaded area, and solid red line.

I guess the red line is some kind of moving average? While grey shows spikes? Or how else could I inteprete this?

Thanks a lot.

Zhenhui[cid:2CB03DFE-FFA0-4DA8-9438-EB2732F92119]

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