[rrd-users] More observations and questions on COUNTER

Simon Hobson linux at thehobsons.co.uk
Sun Oct 24 20:59:24 CEST 2010

Philip Peake wrote:

>So if you look at the data I present to RRD, you will see that it is on
>30 second boundaries, so I would expect the stored value to be the same
>as the presented value -- no ?

NO !
You are using a counter data type, therefore your data WILL be 
processed before storage. The calculation is (current - 
previous)/time = rate

Eg, store 1000 at time 0, store 4000 at time 300, stored value is 
(4000-1000)/300 = 10

Simon Hobson

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