Performance Management Guide

Monitoring Java

There are several possible solutions for monitoring Java performance.

• If you have access to the Java source code, add the following line in order to get the time spent on a code block.

  System.currentTimeMillis()
  

• The JVM also provides the following option, which allows you to view the time that the CPU spent in doing garbage collection.

  java -verbosegc <your_program>
  

• Others tools for monitoring Java are as follows:
  • tprof
  • hprof
  • trace
  • IBM/Alphaworks: Jinsight