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I just start using cacti and I would like to know if it is possible to create a new graph from the sum of values in an other graph (not in the same one) .

For instance, I have a graph with:

Memory Free: 0,28G

Memory Buffers: 0,73G

Cache Memory: 1,17G

I'd like to get a new graph called "Available Memory Usage" and to graph 2,18G (0,73G + 0,28G + 1,17G)

Is it possible?

Thank you in advance for your help

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For multiple data sources (e.g. every interface on a switch) from 0.8.7g onwards you can use the Aggregate Plugin.

Otherwise you can use a CDEF with RPN notation, e.g. "a,b,c,+,+".

  • Hi, thanks for your answer! i've followed your instructions and the following post: forums.cacti.net/viewtopic.php?t=8415 using CDEF:-) – Virtuose Apr 17 '13 at 11:29

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