[rrd-users] Re: RRD Archiving (AVERAGE,MIN,MAX,LAST)

[Alex van den Bogaerdt]

On Mon, Aug 11, 2003 at 10:38:19AM -0700, nate wrote:
> Alex van den Bogaerdt said:
> > LAST(1,3,2,5,4) == 4
> > MIN(1,3,2,5,4)  == 1
> > MAX(1,3,2,5,4)  == 5
> > AVG(1,3,2,5,4)  == 3
> >
> > which answer do you want to get if RRDtool consolidates 5 samples
> > into one at graph time? (rrdtool graph ... --start end-250h ...)
> 
> I'd like all of them, at the moment my graphs show all
> values MIN/AVG/MAX/LAST

Then you need all of those consolidation functions in your RRAs.

You may think you can solve this by using the appropriate GPRINT
options however there is a huge difference between printing
   max(avg(1,2,3,4,5),avg(2,3,4,5,6)) --> max(3,4) --> 4
and
   max(max(1,2,3,4,5),max(2,3,4,5,6)) --> max(5,6) --> 6

HTH
Alex

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