Author: Steely Morneau
Project: SamplerProfiler
Last updated: April 2012
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Summary:
A profiler that determines which methods in a program take the most time to
execute.
Uses a Java agent with a premain method that creates a thread that wakes up
every 1ms and figures out with method the main thread is currently
executing.
Counts how many times the thread wakes up in each method and calculates a
relative ratio of the time spent in each method.
Uses a shutdown hook to correlate the data and output it to standard out.
Usage:
java -javaagent:sampler.jar SomeTestProgram