Measuring time spent on GC

Question

Suppose I am testing a Java server application. I know how much time it takes to finish the test. Now I’d like to know how much was spent on GC during that test. How can I do it?

Answer

The simplest way is to use the -Xloggc and -XX:-PrintGCTimeStamps options when starting up your JVM. I think it prints out how long garbage collection takes.

http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html

Accepted Answer

The simplest way is to use the -Xloggc and -XX:-PrintGCTimeStamps options when starting up your JVM.  I think it prints out how long garbage collection takes.http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html

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