[Xymon] month graps

[Galen Johnson]

That's an RRD "feature".  Due to how it consolidates data over the longer
views, the initial graph is over 5 minutes, the next one is across 15
minutes, etc.  This tends to smooth out interesting events over time.  This
is one the the biggest shortcomings of RRD and why other time-series
databases have been created...like whisper for Graphite or Prometheus data
store.  I wish the Xymon would easily let you replace RRD with a different
graphing tool.

=G=

On Wed, Nov 15, 2017 at 8:19 AM, Steffan <mailinglist at tikklik.nl> wrote:

> Hello,
>
> I have my values in mysql
> the values are every 15 minutes generated.
>
> Im now using this
> /usr/bin/rrdtool graph '.$filename.' --step 900 --imgformat=PNG --title
> "'.$title.'" --slope-mode  --vertical-label="Wh" --alt-autoscale-max
> --start='.$start.' --end=+1hours --width=600 --height=300
> "DEF:min='.$DS_BASE.':min:AVERAGE" "AREA:min#00FF00:Opbrengst"
> GPRINT:min:LAST:" Current\:%8.2lf %sW"  GPRINT:min:AVERAGE:"Average\:%8.2lf
> %sW" GPRINT:min:MAX:"Maximum\:%8.2lf %sW\n"
>
> The problem that I have is that the older values (month graph) has lower
> values ( I think average)
> Is there a way to prevent this is happening?
>
>
> Steffan
>
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