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

From: "Itamar Heim" <iheim(a)redhat.com&gt; To: "Yaniv Kaul" <ykaul(a)redhat.com&gt; Cc: engine-devel(a)ovirt.org, &quot;&lt;arch(a)ovirt.org&gt;&quot; <arch(a)ovirt.org&gt; Sent: Friday, June 1, 2012 7:02:51 PM Subject: compile time (was Re: [Engine-devel] Maven 3 here we come!) On 05/23/2012 11:04 PM, Yaniv Kaul wrote: > 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'. Saggi gave me his command line, which doesn't require any change of settings.xml mvn clean install -Pgwtdev,gwt-admin -DskipTests -Dgwt.userAgent=gecko1_8 -Dgwt.draftCompile=true -Dgwt.compiler.optimizationLevel=0 -Dgwt.compiler.localWorkers=2 -Dmaven.aspectj.incremental=true -Dmaven.aspectj.time=true

I wonder if we shouldn't make something similar to this as the default. preferably, add ./configure script to tweak different options (which is very common in non java projects). _______________________________________________ Arch mailing list Arch(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/arch