Wow this has been a learning experience. I'm putting the finishing touches on the new totally re-written sarvant (in python now). Just added statistics (min,max,avg) to be printed to the graph if you desire. Next step is to get multiple datasets working, them I'm done.. Look for it to drop in the next couple of days.
First off, I'm re-writing the program in Python. If my first real Python app looks anything like my first Perl app I did a few years ago, please hold back the laughs. It is going to support print statistics about the information gathered to the graphs themselves and possibly making HTML reports. Please hang in tight, release should be out within the next 7 days.
I should have a .1 release sometime on Sunday. The program is working and producing results, but I want to change the config file to XML rather than my made up format. After that, it'll be released here and announced on freshmeat.