Source: Sun Microsystems

Date: January 2008

Type: White Paper

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Overview: Java application profiling uses the Java Virtual Machine Profiling Interface (JVMPI) interface, which can cause some distortion and dilation of the run. For clock and hardware counter profiling, the data collection process makes various calls into the JVM, and handles profiling events in signal handlers. The overhead of these routines, and the cost of writing the experiments to disk will dilate the runtime of the Java program. For the most part, the paper estimates that dilation at less than 10%. In addition, although the default garbage collector supports JVMPI, there are other garbage collectors that do not.

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