How to optimize gradle build performance regarding build duration and RAM usage?

Question

I am currently switching from ant to gradle for my multi module web application and at the moment it seems that the current version of Gradle (M9) might be running up agains

Answer 1

GRADLE_OPTS value in gradlew was set like this for me before

DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"

This was causing compileJava fail like below in Jenkin

What went wrong: Execution failed for task ':compileJava'. GC overhead limit exceeded

Later I had changed DEFAULT_JVM_OPTS like below to make Jekin build success -

DEFAULT_JVM_OPTS="-Xmx512m" "-Xms64m"