[jboss-as7-dev] Parallel maven build: 33% improvement

All, I tried telling maven to use all my cores (8 if you count hyper-threaded cores) and I've seen a 33% reduction in build times. Here's my results: ./build.sh clean install -DskipTests 3:43 ./build.sh clean install -DskipTests -T 4 2:57 ./build.sh clean install -DskipTests -T 8 2:30 I'm using an SSD, so YMMV. However, there are 4 plugins that are not marked as @ThreadSafe, so i'm not sure how safe this is. [WARNING] org.apache.maven.plugins:maven-help-plugin:2.2 (Can't find an issue for this yet) [WARNING] org.codehaus.mojo:buildnumber-maven-plugin:1.2 (Claims to be fixed in 1.2: http://jira.codehaus.org/browse/MBUILDNUM-13) [WARNING] org.codehaus.mojo:xml-maven-plugin:1.0 (Unresolved: http://jira.codehaus.org/browse/MOJO-1709) [WARNING] org.kuali.maven.plugins:properties-maven-plugin:1.5.3 (Unresolved: http://jira.codehaus.org/browse/MOJO-1677) For more info on parallel maven builds: https://cwiki.apache.org/MAVEN/parallel-builds-in-maven-3.html Has anyone else experimented with this feature? Paul. -- Paul Robinson Web Service Transactions Lead paul.robinson(a)redhat.com JBoss, a Division of Red Hat Registered in England and Wales under Company Registration No. 03798903 Directors: Michael Cunningham (USA), Brendan Lane (Ireland), Matt Parson (USA), Charlie Peters (USA)