[rrd-users] How to define a counter wrap ?

Christian Volkmann CVolkmann at orga-systems.com
Thu Feb 12 14:08:44 MET 2004

Hi to all,

I am looking for a feature to use a defined wrap around for a counter.
I have to work with a counter which turns around at 1.000.000

My idea is a new DST:

After a define "DS:a:WRAPCOUNTER:<heartbeat>:MIN:MAX"

like: DS:a:WRAPCOUNTER:600:0:1000000

=> rrdtool should count    999999     => 2
                            (valueold) => (valuenew)

if ( valueold > valuenew )
	value= valuenew + MAX - valueold

Is it possible to do such measurement with the current rrd-version ?
This would prevent an undefined value for counter where the wrap is known.

Best regards,


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