[drraw-users] Upcoming features

Christophe Kalt kalt at taranis.org
Thu Dec 21 08:53:12 EST 2006


On Dec 21, Frans Haarman wrote:
| * filter empty charts
| 
| I have many charts which are empty. We do automatic snmp monitoring
| (just monitor all found interfaces). It be nice of I can filter out
| graphs which are empty.

Hah, it's on my list to look at, i think i missed it in my
earlier e-mail.  Do you update the RRDs with zeros?  If so,
it's hard to detect "empty" charts, as it requires to compute
the data twice:  (1) once to see if it's zero, (2) once to
produce the graph.

A bit too costly, i'm afraid, but i need to look at this
more closely to see if there's a good/better way.  i think
it's one of these cases where having RRDtool is problematic.

The one thing i would really like is for dashboards to
automatically skip such empty graphs, something which could
probably be done relatively cheaply by checking when the
source RRD files have last been updated.


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