[rrd-users] RRD generate lines step sized on future??

[Daniel Hilst]

On 04-09-2012 15:17, Daniel Hilst wrote:
> When I ran "rrdtool fetch somefile.rrd AVERAGE -s -15m"
>
> The last line is aways STEPSIZE on future and nan.. so if my step is 2
> minutes, and the output of fetch is
>
> 1346781480: nan
> 1346781600: nan
> 1346781720: nan
> 1346781840: 1.0000000000e+00
> 1346781960: 1.0000000000e+00
> 1346782080: nan
>
>
> ^ This epoch is 2 minutes on future.
>
> I'm facing problems with collectd and nagios integration when I change
> step from 10 to something greater than 20 secs.. I think that this
> "future step" is causing collectd-nagios to misbehave. Is there a way to
> configure this rrd's behavior??
>
> I'm thinking here, why would I have an step on future, if it do not
> happen yet... is a kind of optimization??
>
>
> Thanks in advance!
> Hilst
>

My problem was about collectd's cache life time...
Cheers