Here is a script that I setup as I didn't like the output getting for CPU trending. This will plot out only CPU busy time. Also stores the data in txt file on each server it is run on so you can do more deep dives on spikes and timing if needed.
Only thing needed is "sysstat" to be installed. Have run on RHEL5.
Plesae let me know what you think of it...it is my first BB script so let me know what you think or improvements.