[rrd-users] incoherent fetch and graph on year scale

[Sebastien MICHEL]

it works if I create this db:
 rrdtool create temp-LFBO.rrd --start $(date +"%s")   \
             --step $TEMPS                       \
             DS:temp:GAUGE:$((TEMPS * 2)):U:U    \
             RRA:AVERAGE:0.2:1:$TEMPS            \
             RRA:AVERAGE:0.2:6:168               \
             RRA:AVERAGE:0.5:12:372              \
             RRA:AVERAGE:0.8:144:3650
and not
             RRA:AVERAGE:0.8:144:36500

I think it's a bug with db can store data older than 1970 or
1988.

what do you think ?

Le mardi 13 octobre 2009 à 15:03, Sebastien MICHEL a écrit:
> hey,
> 
>   I would like to know if my problem is an rrdtool bug or
>   a usage problem.
> 
> I am on unstable debian and use :
> RRDtool 1.3.8  Copyright 1997-2009 by Tobias Oetiker
> <tobi at oetiker.ch> Compiled Jun  2 2009 18:23:37
> 
> works :
> rrdtool fetch data/temp-LFBO.rrd --start "-31d" --end now
> AVERAGE
> 
> doesn't works:
> rrdtool fetch data/temp-LFBO.rrd --start "-32d" --end now
> AVERAGE rrdtool fetch data/temp-LFBO.rrd --start "-1y"
> --end now AVERAGE
> 
> the "rrdtool fetch data/temp-LFBO.rrd --start "-32d" --end
> now AVERAGE" result is a part of the first sample of
> "rrdtool dump data/temp-LFBO.rrd" strange isn't it ?
> 
> You can get the database here:
> http://meteo.falguerolles.org/data/temp-LFBO.rrd
> 
> To create my db:
> rrdtool create temp-LFBO.rrd --start $(date +"%s")   \
>             --step $TEMPS                       \
>             DS:temp:GAUGE:$((TEMPS * 2)):U:U    \
>             RRA:AVERAGE:0.2:1:$TEMPS            \
>             RRA:AVERAGE:0.2:6:168               \
>             RRA:AVERAGE:0.5:12:372              \
>             RRA:AVERAGE:0.8:144:36500
> # "RRA:AVERAGE:0.2:6:168", # moy sur une heure pour tout
> une semaine => 6data * 10min = 1h : 24h * 7j = 168 #
> "RRA:AVERAGE:0.5:12:372", # moy sur 2heures pour tout un
> mois => 12data * 10min = 2h : 372 = 12 * 31 valeur = 12
> valeurs par jour # "RRA:AVERAGE:0.8:144:365" # moy sur un
> jour pour un ans => 24h * 6data =144data pour une journee
> : 365jours (valeurs) par ans * 100 years.
> 
> thanks, regards,

-- 
  Sébastien 
"Nous n'héritons pas du monde de nos parents, nous
empruntons le monde de nos enfants.", Saint-Exupéry