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

[Steve Shipway]

 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<mailto: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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