[rrd-users] RRDTool not accepting any updates (NaN instead)

[Wouter van Eekelen]

Aren't my updates incremental? The second update has quite a higher value
than the first one, yet it's still NaN.

On Sat, Dec 4, 2010 at 9:23 PM, Steve Shipway <s.shipway at auckland.ac.nz>wrote:

>   Your DS are of type 'derive', with a minimum value of 0.  'Derive'
> stores the rate of change of the variable, IE (( x - x(prev))/(t-t(prev)))
> This means you'll need at least two sequential updates, which must be
> increasing (in order to get a valid positive derivitive) before you'll see
> anything stored in the RRAs.  Since your step is 60s, this means two
> increasing updates about 1min apart, and more than 2 (4, 13, 145) if you
> want any of the RRAs with a cdp of more than 1 to show a value (since your
> XFF is 0.5).
>
> Steve
>
>  *Steve Shipway*
> University of Auckland ITS
> *UNIX Systems Design Lead*
> s.shipway at auckland.ac.nz
> Ph: +64 9 373 7599 ext 86487
> **
>   ------------------------------
> *From:* rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch[rrd-users-bounces+s.shipway=
> auckland.ac.nz at lists.oetiker.ch] on behalf of Wouter van Eekelen [
> wouter.van.eekelen at serverffs.com]
> *Sent:* Sunday, 5 December 2010 8:09 a.m.
> *To:* rrd-users at lists.oetiker.ch
> *Subject:* [rrd-users] RRDTool not accepting any updates (NaN instead)
>
>  I'm having a huge trouble with RRDtool, all updates I'm doing are
> accepted as 'NaN'
> Here is are all commands with output:
>
>
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