[mrtg] Re: mrtg & rrdtool & max values

[Rainer Bawidamann]

In article <200011201020.eAKAKcK16611 at rotta.tmt.tele.fi>,
	odie at rotta.tmt.tele.fi writes:
> 
>> > Is there a reason why those MAX-values are consolidated by default 
>> > and the samples taken at 5minute intervals are not used for MAX RRA?
> 
> I haven't tested this but I'd say that rrd databases should be created with
> these flags:
> 
>                           "RRA:MAX:0.5:1:600",
>                           "RRA:MAX:0.5:1:700",
>                           "RRA:MAX:0.5:1:775",
>                           "RRA:MAX:0.5:1:797");

These 4 RRAs will store the same data, at least the first 600 values. If
you want 2 year of 5 minute samples you have to say

        RRA:MAX:0.5:1:229536

which gives you a rrd file with ~3.6 MB for the MAX-RRAs which will take
long to read and consolidate for the graphs.

Rainer
-- 
Rainer.Bawidamann at rz.uni-ulm.de

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