[rrd-users] Maximum number of data sources/max cdef size.
a.maus at science-computing.de
Fri Feb 9 18:12:38 CET 2007
On Fri, Feb 09, 2007 at 05:02:27PM +0000, George Barnett wrote:
> I'm aggregating boxes into a graph to draw a cluster and I'm getting
> null values.
> Is there a maximum number of datasources in 1 graph?
> Is there a maximum size of a cdef?
> I've found that if I do this with only a few DS's, it works fine. Maybe
> somebody has tried this before?
> My graph command is below:
I guess that there is a upper limit, but I don't think you reach it ;)
I'm doing similar graphs for 166 nodes, with 4 DS for each node
(CPU stats: user,nice,system,idle) without any problem
(using rrdtool 1.2.12 - yes I know thats old ;).
(This includes several CDEF statements like sorting out unreachable nodes, etc. )
Whats puzzling me are your strange (at least for me) looking
Whats these sql thingy? Do you store your data in an SQL database ?
If yes, maybe thats the problem. I'm storing my data in plain rrd files.
Dipl.-Ing. Andreas Maus science+computing ag
System Administration Hagellocher Weg 73
mail: a.maus at science-computing.de 72070 Tuebingen, Germany
tel.: +49 7071 9457 456 www.science-computing.de
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