On Fri, Feb 09, 2007 at 05:02:27PM +0000, George Barnett wrote: > Hi, > > 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: >
Hi George. 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 DEFs. e.g.: DEF:1aggminclient_requests=sql//RRDValue/UnixTimeStamp/value/RRDKeyID=5057/derive/:value:MIN 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. HTH, Andreas. -- Dipl.-Ing. Andreas Maus science+computing ag System Administration Hagellocher Weg 73 mail: [EMAIL PROTECTED] 72070 Tuebingen, Germany tel.: +49 7071 9457 456 www.science-computing.de
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