[rrd-users] RRDTool not accepting any updates (NaN instead)
tobi at oetiker.ch
Sat Dec 4 22:08:25 CET 2010
Today Wouter van Eekelen wrote:
> Aren't my updates incremental? The second update has quite a higher value
> than the first one, yet it's still NaN.
it seems to me that you have set the mrhb to 5 seconds ... while
the step size is 60 seconds ... this is possible but it requires
you to update the rrd at least every 5 seconds ...
> 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:
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900
More information about the rrd-users