[rrd-users] Re: rrd fetch makes up numbers

[Nemo]

Sorry I was away for a week.. So I tried that, I did cut and paste, and
yes it gave me the right results like you have.  However! If you actually
update it normally like this:

rrdtool update x.rrd N:49955 every minute, you get wrong results that I'm
talking about!

even doing this:

rrdtool update x.rrd 980021640:49955

then a minute later doing

rrdtool update x.rrd 980021700:49955 and so on.



I'm running on Solaris 2.6 Ultra 5, using rrdtool-1.0.28

I've noticed however, that if you deviate by 1 number (i.e. the number
inserted each time is different from the last number inserted) then it
works fine!

On Sun, 14 Jan 2001, Alex van den Bogaerdt wrote:

> Nemo wrote:
> >
> > rrdtool create file.rrd -s 60 DS:data:GAUGE:120:0:U RRA:LAST:0.5:1:10080
> > rrdtool update file.rrd 979506480:49955
> > rrdtool update file.rrd 979506540:49955
> > rrdtool update file.rrd 979506600:49955
> > rrdool fetch file.rrd LAST
> >  ...
> >  979506420: NaN
> >  979506480: 4.9223000000e+04
> >  979506540: 3.9119216667e+04
> >  979506600: 4.3294333333e+04
>
> After doing s/rrdool/rrdtool/ :
>  979506420:        NaN
>  979506480: 4.9955000000e+04
>  979506540: 4.9955000000e+04
>  979506600: 4.9955000000e+04
>  979506660:        NaN
>
> So: please try again.  Just use cut and paste. Make sure to do this in
> a directory without a file called x.rrd
> rrdtool create x.rrd -b 979506420 -s 60 DS:x:GAUGE:120:0:U RRA:LAST:0.5:1:10080
> rrdtool update x.rrd 979506480:49955
> rrdtool update x.rrd 979506540:49955
> rrdtool update x.rrd 979506600:49955
> rrdtool fetch x.rrd -s 979506420 -e 979506660 LAST
>
> If it doesn't produce the correct numbers, retry with a recent version
> of RRDtool.
>
> cheers
>

-- 
nemo at circinus.com


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