> 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 by PRINT:t1:%s (this from memory, you may need to correct it, especially the print statement). 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 _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
