is It same mean "JAVA_ARGS" and "JAVA OPTS"

Question

I want to configure java PermGen option for jenkins.

in search web, I found article which write:

set java_opts JAVA_OPTS="-server -XX:PermSize=128M -XX:MaxPermSize=256m" 

other article says:

set java args JAVA_ARGS="-XX:MaxPermSize=512m -Xms512m -Xmx1024m"

Are each options valid? if not, what is the difference?

Answer 1

The only thing that is important is what the actual arguments are in the "-XX:MaxPermSize=512m -Xms512m -Xmx1024m".

What you call the environment variables is up to you for the most part, it is whatever the scripts you want to use it are expecting.

Answer 2

Java applications are usually called by a startup script with a command like java $JAVA_ARGS $JAVA_OPTS -jar application.jar

Both variables are JVM options and they're both given to the application.

It is (unfortunately) not uncommon to have a list of 10 general options + 10 optimizations options so they're split across 2 variables for readability.

PermGen settings are considered garbage collector optimizations. They go in JAVA_OPTS. You should check that the jenkins script is using both variables as expected.