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


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

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.