[rrd-users] Re: MAX-value differs for week/month
serge.maandag at staff.zeelandnet.nl
Tue Jan 18 14:08:38 MET 2005
> Then in rrdgraph I use the MAX-CF to GPRINT the maximum value
> over the viewed time. For my DEF-statement I also use the AVERAGE.
> GPRINT:total0:MAX: maximum %2.1lf
Uhmm.. Where did that total0 come from? I don't see a DEF.
> From my point of view the MAX GPRINTed in the "day-view" (-s
> "-1day") should not be higher than the MAX printed in the
> "week-view" (-s
> "-1week") or the "month-view" (-s "-1month"), cause I store
> the max-values in my RRD.
Correct, but only if you print MAX(MAX), not if you print MAX(AVERAGE).
You store the MAX values in your MAX RRA to be more specific.
> is lower and so on. It seems that the MAX in GPRINT only
> takes the maximum of the actually drawn values and not the
> MAX of the RRD, cause the problem does not occure if I use
> MAX as CF for DEF, which is not what I want.
Ah, you see: it prints just what you defined: MAX(AVERAGE)
> Is this a bug or a feature and is there any way round?
It's a feature. It just prints what you ask.
The way to print MAX(MAX) is to DEF it and GPRINT it of course..
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