I'm running ganglia on a cluster managed with OpenPBS. I have made a few extra metrics for monitoring CPU temp and batch system jobs on each node. I was wondering how I could go about making a sort of cluster queue usage graph. Each queue would pile on top of each other the number of nodes it is using.
E.g. if queue1 was using 24 of 124 available nodes, and queue2 was using 96, there would be a section at the bottom 20% and a different colored section on the next 75%, and the top 5% would be empty.

