[rrd-users] Time Shift on Trend Graph
Alex van den Bogaerdt
alex at vandenbogaerdt.nl
Wed Jul 3 00:21:22 CEST 2013
> However, from what I appear to be reading this isn't something which is
> easy to achieve as the "rrdtool first" function doesn't return the first
> non-unknown value, but the start of the RRA.
So, what about making this a two-pass solution.
First don't graph anything, just use VDEF:t1=yourdatasource,FIRST followed
(this from memory, you may need to correct it, especially the print
This gives you the timestamp of the first non-NaN bucket in the RRA used to
compute this time series.
Then you use that time to create your graph.
try it and let us know please
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