[rrd-users] Re: Solution for consistent max values

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Thu Nov 8 10:33:34 MET 2001

estreigh at nexl.com wrote:
> 'lo all...
> I am looking at four graphs of the same data, hourly, daily, monthly and
> yearly. I understand the reason that the max value in the yearly graph is
> lower than the max value in the hourly graph

I don't.  Are you sure you understand the difference between:

a)  the maximum of all averages
b)  the maximum of all maxima

I ask this because I think you are viewing (a) and are looking for (b).

>                                               but my question is this. Would
> the results be less than desirable if I chose to store my MAX consolidated
> data points in an RRA every 300 seconds for a full year? This would result
> in 525600 consolidated data points being stored in the same RRA. When I then
> build the graphs the MAX would be consistent throughout. I wonder how large
> the RRD file would be.

Consolidation will occur at graph time in stead of collect time.  Unless you
actually use the values in that high resolution (for instance: 100 days ago
to 99 days ago, in a 5-minute resolution) I don't think there is a difference.

 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
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