How can I speed up my maven2 build?

Question

I\'m using a local artifactory to proxy the request, but the build and test phases are still a bit slow. It\'s not the actual compile and tests that are slow, it\'s the \"wa

Answer 1

If you are using Maven3 ($ mvn -version), you can also follow this guide. In my case, the results are:

Normal execution:

$ mvn clean install 
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 03:05 min
[INFO] Finished at: 2015-07-15T11:47:02+02:00
[INFO] Final Memory: 88M/384M

With Parallel Processing (4 threads):

$ mvn -T 4 clean install
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:22 min (Wall Clock)
[INFO] Finished at: 2015-07-15T11:50:57+02:00
[INFO] Final Memory: 80M/533M

Parallel Processing (2 threads per core)

$ mvn -T 2C clean install

[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:12 min (Wall Clock)
[INFO] Finished at: 2015-07-15T12:00:29+02:00
[INFO] Final Memory: 87M/519M
[INFO] ------------------------------------------------------------------------

As we can see, the difference it's almost a minute, near 20-30% of speed improvement.