Graph multiple unknown named RRD values in one graph

Michael Hobbs michael.hobbs at
Thu Aug 14 20:25:26 CEST 2008

Hi all,

I have spent the last day reading documentation and searching the "tubes" for an answer without any luck. Here is my scenario.

I have multiple hosts reporting JVM free memory numbers in the following format. Each line is a different JVM name with its current free memory number.

 mn17camp.web: 846
 mn18camp.web: 669
 mn19camp.web: 337
 mn30camp.web: 938
 mn31camp.web: 750
 mn32camp.web: 812
 mn33camp.web: 723
 mn5camp.web: 785
 mn63camp.web: 179
 mn65camp.web: 518
 mn6camp.web: 597
 mp3camp.web: 673
 tbo1camp.web: 461
 tbo2camp.web: 1030
 tbo3camp.web: 490

I have hobbit saving them to an rrd file using the data channel in the ncv format. Is there a way to graph these without explicitly defining each jvm name? i.e. Can I iterate through whatever names are in the file? Or can I have hobbit create different rrd files based on content of the ncv file? I'm guessing it could be similar to how the disk test does it.


Michael S. Hobbs
sr. systems administrator

Phone: 480.289.6832 | Fax: 480.807.0665
michael.hobbs at |

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