[Engine-devel] compile time (was Re: Maven 3 here we come!)

On 05/23/2012 12:59 PM, Doron Fediuck wrote: > Hi all, > As discussed last month[1], we had to deal with some issues which > turned out to be a Maven bug. > Thanks to Juan and Asaf's work, our current sources now build properly > using Maven 3. > So you're all invited to migrate into Maven 3. Other than upgrading > your local maven package > no other action is needed. > > For now, Maven 2 will also work for you, but I expect in the future > we'd like to make use > of some advanced features, so migration to 3 is recommended. > > Talking about advanced features, an interesting challenge is feedback > on parallel builds [2]. I'm not happy with parallel builds - it creates more java processes, each taking quite a bit of memory. This, in turn, causes them to swap, making everything crawl. Took me 22 minutes to compile the webadmin and additional 21 minutes for the user portal, with -T 4. I've had 3.5GB of swap used (and 7GB resident memory with 'java' processes running around). It usually takes me The command line I've used was: mvn -T 4 clean install -Pgwt-admin,gwt-user -DskipTests=true -Dmaven.test.skip=true As opposed to 7+ 3 minutes without '-T 4'.