Reference Guide: HProf

InformIT has published a user guide to HProf, the Java profiling tool from Sun.

Sun includes a profiling tool built into the JVM called HProf that can provide you with method-level response times as well as heap information. The JVM provide various programmatic interfaces that allow you to obtain runtime information, and as of Java 5.0 SE, the newest and least invasive is the Java Virtual Machine Tool Interface(JVMTI), which HProf is based on. HProf can be invoked by providing a command line option when you start your Java application and then it generates a log file as output, which you can either examine manually or programmatically parse. Furthermore, HProf executions can be integrated into a build script in order to generate reports automatically.


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