Speeding up my build with gradle and some paralell magic

Just posting the results here, will get back to the details and some explanation in a later post.

Multi-module java project, 10 sub-modules, about 10k(?) unit-tests.

mvn clean install:  Total time: 3:52.082s ~ 232 secs
gradle clean build: Total time: 3 mins 20.987 secs
gradle clean build: Total time: 2 mins 17.648 secs (module parallel)
gradle clean build: Total time: 2 mins 0.58 secs ~ 120 secs ( module parallell, 2 threads)
gradle clean build: Total time: 2 mins 26.935 secs ( module parallell, 3 threads)