How to compile Maven project effectively and fast

Question

I have a maven project with 13 sub modules. I have two questions how to optimize the build process:

1. I want to compile the Java code only for x86-64 server. How I con configure Maven to do this?
2. I have a server with 4 CPU cores. Is it possible to use multi-threading for compiling the code?

Answer 1

2) mvn package -T 2C will build with 2 Threads per CPU core

Answer 2

1. I want to compile the Java code only for x86-64 server. How I con configure Maven to do this?

Java is cross platform. You can't make it compile for only x86-64.

.2. I have a server with 4 CPU cores. Is it possible to use multi-threading for compiling the code?

The javac is multi-threaded. It might not use all the cores you have, but that's as multi-threaded as you can make it.

As Andrew notes, you can make the build multi-threaded which causes the tests to be run concurrently (something which might break your tests) This doesn't make the compilation concurrent.

Answer 3

1. Maven invokes standard javac.
2. Yes, it is possible, see Parallel builds in Maven 3