[rrd-users] Sup-Sample Aggregate Functions?
tim at moocowproductions.org
Thu Apr 12 19:20:41 CEST 2007
I was curious as to if it was possible to create a graph that contains a
sub-sample aggregate. What I am trying to do is basically smooth out a
series of points to produce a sort of trend. This actually works well
but the problem is that I am using a step-size of 2 seconds and am only
recording data for a short period of time (a few minutes). As a result,
the graphs look very blocky since you can see jaggedness. Here are some
You can see the Trend (using HWPREDICT here) and the Average (using the
TREND VDEF) come close, but I really want a spline-based smoothing or
something along those lines.
Something, for instance, similar to this:
Really, I don't care about the actual datapoints. I care about making a
smooth looking graph that is an estimate of the actual datapoints. I
checked #rrdtool and was told it was not possible with the standard
version of rrdtool. Anyone have any ideas on how I could augment rrdtool
for this or had another suggestion on what I could use?
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