My application has a factory class which has modular elements registered to it. A run method is called on the factory class which subsequently executes the run methods on the modules.
I am using PEAR PHP's Profiler to measure the speed of execution for each module in microseconds. So far I have been storing the module runtimes and the deltas of each runtime in my database.
This has produced somewhat interesting statistics when I graph the runtime (I can see spikes, etc). However, I don't have much experience with statistics, what kind of analysis would prove valuable for looking at code performance?
My intention is to catch naively written modules before deployment.