[rrd-users] RRD graph step don't match with script step

Simon Hobson linux at thehobsons.co.uk
Sun Mar 30 15:40:44 CEST 2008

enerjaizer wrote:

>My rrd file is fed  every 5 minutes, at 00:03, 00:08, 00:13, 00:18, etc.
>But my graph looks like as if the step was at 00:00, 00:05, 00:10, ...
>And so when I make a fetch on the rrd file. (I checked the unix timestamp).
>Does anyone ever see this kind of problem?

It's not a problem, it's correct and documented behavior.

All data is normalised to intervals whose end times are exact 
multiple of 'step' since unix epoch (midnight, 1st Jan 1970). RRD 
will NOT work to any other schedule of intervals.

00:00, 00:05, 00:10 are all multiples of 300s since unix epoch
00:03, 00:08, 00:13, 00:18 are not

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