[rrd-users] Re: Max Min and Avg RRAs

[Alex van den Bogaerdt]

Gellatly, Laurie wrote:
> 
> 
> Hi,
> I'd like to store three values, being the maximum, average and minimum
> response times measured. This I'm doing now. I'd then like RRAs that
> use consolidation of Maximum, Average and Minimum to correspond to the
> DS so that my consolidation is logically:
> the maximum of the maximums
> the average of the averages and
> the minimum of the minimums.

This is indeed the right way of doing it.

> Extending the definition of the RRA to read:
> RRA: CF[CF2,CF3..CFn]:xff:steps:rows
> so you can define your consolidation factor for all or for each DS
> would be great. I know that storage is cheap but when you start to
> multiply up the number of RRDs that would be involved and then there 
> is the processing of the data. 

I don't get this part.  In stead of storing
  minvals:1st,2nd,3rd.....Nth,
  avgvals:1st,2nd,3rd.....Nth,
  maxvals:1st,2nd,3rd.....Nth,
you propose to store (at least: that's what I make from it)
  vals:1st min, 1st avg, 1st max, 2nd min, 2nd avg, 2nd ....

This would only change the order of the numbers, not the amount.
So, either you're overlooking something or I am.

cheers,
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