Hi!
I have a unexpected behavior with a graph that is created similar to this
(simplified):
...
--start=1309282387 \
--end=1309285987 \
'DEF:avg=test.rrd:value:AVERAGE:start=1308677587' \
'LINE1:avg:average' \
'GPRINT:avg:MIN:(%9.2lf' \
'GPRINT:avg:AVERAGE:/%9.2lf' \
'GPRINT:avg:MAX:/%9.2lf' \
'GPRINT:avg:LAST:/%9.2lf)\l'
I was assuming that the GPRINT would only be calculating the
min/max/average/last for the area really graphed (3600 seconds).
But it seems it is calculating it for the whole 7 days and 1 hour (=608400
seconds) that got loaded in DEF.
Is this "expected" and/or "intended" behavior?
If it is, is there an easy means to get what I really need - just the values
for what I graph.
You may ask why I use "start=" in the DEF in the first place.
The explanation is that I essentially need it for predictions using the PREDICT
CDEF function.
And it came as a surprise when I was trying to estimate the AVERAGE of a graph
zoomed in on an "outage", which showed the difference between the average and
the prediction (using
"CDEF:delta=avg,604800,604800,518400,432000,345600,259200,172800,86400,8,1800,avg,PREDICT,-")
I was expecting an average of -8 as the average but got 0.28, which would be
realistic for the whole 7 days.
Thanks,
Martin
_______________________________________________
rrd-users mailing list
rrd-users@lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
