[rrd-users] How to store exact value

Simon Hobson linux at thehobsons.co.uk
Sun Jan 24 18:14:16 CET 2010

Denis wrote:

>I'd like to store only 2.3400000000e+02 and not 2.3406449040e+02
>I tried to create a base with LAST or MIN or MAX as RRA CF and GAUGE or
>ABSOLUTE as DS DST but with no luck. It seems RRD just want to average
>the provided value.
>I can understand that it is done for a counter as it is explained in
>But in my case I need the exact value at the time I provide it.
>Is it possible ?

For what you appear to be after, rrdtool isn't the right tool for 
you. rrdtool is specifically designed to store values consolidated 
over various timescales and resolutions - it isn't designed to store 
arbitrary values at arbitrary times (actually it never stores values 
at all, it only ever stores rates).

For more information see Alex's tutorials at 
http://www.vandenbogaerdt.nl/rrdtool/, and in particular the one on 
Rates, normalizing and consolidating.

Simon Hobson

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