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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:

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.