profiler

Time profiling java-agent to find most time spending methods

Usage:

• Run any class once
• Go to Run -> Edit configurations
• VM options: -javaagent:"PATH_TO_JAR\Profiler.jar"[=[INSPECTED_PACKAGE][;INSPECTED_CLASS1[;INSPECTED_CLASS2[;...]]]]
• Run again to watch execution statistics

Examples of VM options:

-javaagent:"C:\Users\Grigory\IdeaProjects\profiler-1class\out\artifacts\Profiler\Profiler.jar"=;Heap;HeapTest

-javaagent:"C:\Users\Grigory\IdeaProjects\profiler-1class\out\artifacts\Profiler\Profiler.jar"=ru.progwards.java2.lessons.synchro.gc;Heap;HeapTest

-javaagent:"C:\Users\Grigory\IdeaProjects\profiler-1class\out\artifacts\Profiler\Profiler.jar"=ru.progwards.java2.lessons.synchro.gc

-javaagent:"C:\Users\Grigory\IdeaProjects\profiler-1class\out\artifacts\Profiler\Profiler.jar"

Compilation (not necessary - you can use Jar):

• Create artifact in you project: Ctrl+Alt+Shift+S -> Artifacts -> Add (Alt+Insert)
• Name: "Profiler"
• Manifest file: choose any folder
• Open manifest file in editor, add there line with Profiler class full path:

Premain-Class: ru.progwards.java2.lessons.patterns.Profiler

• Edit Profiler.rootPkg variable to mark, where to search for inspected classes
• Build -> Build Artifactis -> Build

Compile dependency:

• javassist

Contribution

We are creating simple Profiler agent, easy to use and deploy, without dependencies. You are welcome to improve it. Target Java version is 1.5 for now.