[rrd-users] Question about PDPs
linux at thehobsons.co.uk
Tue Jun 29 10:12:37 CEST 2010
Stevens, Weston J wrote:
>So how does this work. Say you have a step of 15 seconds for an RRD,
>and you're updating the RRD at 5 second intervals. Does this mean
>the PDP is the average of those 3 points, and just like a CDP it is
>an averaged data point?
Yes, RRD tool accumulates the data you enter until it has a full step
period - and then it normalises what it has. So yes, in your
scenario, each primary data point is itself an average of the three
Alex has some good tutorials at http://www.vandenbogaerdt.nl/rrdtool/
- note in particular the one on normalisation.
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