As with any data-gatheringprocess that is to be used to generate graphs, some tinkering of the data gathered will have to be carried out prior to piping through gnuplot.
Be proactive about gathering the required information in advance. Data-driven decisions go smoothly and avoid injecting emotion which will muddle the process.
Collect Diagnostic Data: An optional step on how to use the Collect Data capability to automate the process of gathering problem determination artifacts.