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

[Tobias Oetiker]

Hoi Wouter,

Yesterday Wouter van Eekelen wrote:

> And just to confirm, these arguments:
> --
>                 $command = "/usr/bin/rrdtool create ".$rrd_file." -s 60 \
>                                 DS:ds0:DERIVE:90:0:4294967295 \
>                                 DS:ds1:DERIVE:90:0:4294967295 \
>                                 RRA:AVERAGE:0.5:1:600 \
>                                 RRA:AVERAGE:0.5:6:700 \
>                                 RRA:AVERAGE:0.5:24:775 \
>                                 RRA:AVERAGE:0.5:288:797 \
>                                 RRA:MAX:0.5:1:600 \
>                                 RRA:MAX:0.5:6:700 \
>                                 RRA:MAX:0.5:24:775 \
>                                 RRA:MAX:0.5:288:797 \
>                                 RRA:MIN:0.5:1:600 \
>                                 RRA:MIN:0.5:6:700 \
>                                 RRA:MIN:0.5:24:775 \
>                                 RRA:MIN:0.5:288:797";
> --
>
> Will be fine for graphing bandwidth (on HP procurve switchports)?
> Any int wraps (the HP resets to 0 when it passes the unsigned integer limit
> of 4,294,967,295) will be recognized and not cause any problems?
> How long will the data be stored for?

note that the upper limit is the rate and not the actual value you
are putting in ... so the 4 trillions are a bit much ... I would
rather suggest to use the actual bandwidth of the switch port

cheers
tobi

>
> On Sat, Dec 4, 2010 at 10:28 PM, Wouter van Eekelen <
> wouter.van.eekelen at serverffs.com> wrote:
>
> > That works a lot better indeed. Is there a reason updatev can't output such
> > information?
> > If it would just tell me 'mrhb expired, assuming nan' I would have solved
> > this way faster.
> >
> >
> > On Sat, Dec 4, 2010 at 10:08 PM, Tobias Oetiker <tobi at oetiker.ch> wrote:
> >
> >> Wouter,
> >>
> >> 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 ...
> >>
> >> cheers
> >> tobi
> >>
> >> >
> >> > 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
> >>
> >
> >
>

-- 
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