Hi Francesco, Here is an example for you:
Define your graph with the 3 data sources you want selected. For this example I'll use mem_memAvailReal, mem_memAvailSwap,mem_memBuffer in the Device template. Add these two lines to the Custom field in the graph: CDEF:avg=mem_memAvailReal,mem_memAvailSwap,mem_memBuffer,3,AVG AREA:avg#00cc00:average The CDEF line is a RPN expression that calculates the average you are after (http://oss.oetiker.ch/rrdtool/doc/rrdgraph_rpn.en.html). That is then graphed by the AREA line. The AREA line is just an example - you can change it to suit how you want your graph to appear (http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html), but you must have something equivalent or no graph is generated - the CDEF line alone is not sufficient. Cheers, Kent. ------------------------ Kent Gibson -------------------- m2f -------------------- Read this topic online here: http://community.zenoss.com/forums/viewtopic.php?p=11367#11367 -------------------- m2f -------------------- _______________________________________________ zenoss-users mailing list [email protected] http://lists.zenoss.org/mailman/listinfo/zenoss-users
