----- Original Message ----- > From: "Einav Cohen" <[email protected]> > To: "Greg Sheremeta" <[email protected]> > Cc: "Vojtech Szocs" <[email protected]>, "Alexander Wels" <[email protected]>, > [email protected] > Sent: Thursday, May 15, 2014 3:22:53 AM > Subject: Re: [ovirt-devel] limiting gwt compiler threads to 1 > > I could be wrong, but it seems that the default value > for "gwt.jjs.maxThreads" is 4 [1] - maybe it is not override-able?
Indeed, following properties are set by default: gwt.jjs.permutationWorkerFactory=com.google.gwt.dev.ThreadedPermutationWorkerFactory gwt.jjs.maxThreads=4 ThreadedPermutationWorkerFactory computes the number of workers (threads in this case) like so: numWorkers = Math.min(numWorkers, Integer.getInteger(MAX_THREADS_PROPERTY, 1)); numWorkers -> corresponds to localWorkers GWT option (gwt.compiler.localWorkers) MAX_THREADS_PROPERTY -> corresponds to gwt.jjs.maxThreads GWT option In short, all you should do is specify -Dgwt.compiler.localWorkers=1 which will cause numWorkers to become 1. > in any case, I believe that using: > DEV_EXTRA_BUILD_FLAGS="-Dgwt.compiler.localWorkers=2" (or "1", I guess) > will help here - see README.developer [2] Indeed :) > > ---- > Thanks, > Einav > > [1] http://gerrit.ovirt.org/#/c/25163/2/frontend/webadmin/modules/pom.xml > > [2] from README.developer, around line 142: > """ > ... > DEV_EXTRA_BUILD_FLAGS > Any maven build flags requires for building. > > For example, if your machine is low on memory, use: > DEV_EXTRA_BUILD_FLAGS="-Dgwt.compiler.localWorkers=2" > ... > """ > > ----- Original Message ----- > > From: "Greg Sheremeta" <[email protected]> > > To: "Vojtech Szocs" <[email protected]>, "Alexander Wels" > > <[email protected]> > > Cc: [email protected] > > Sent: Wednesday, May 14, 2014 9:09:17 PM > > Subject: [ovirt-devel] limiting gwt compiler threads to 1 > > > > Hi, > > > > On Fedora 20, I sometimes get GWT compiler crashes due to OutOfMemory. So I > > tried limiting to 1 thread like so: > > > > make clean install-dev PREFIX=$HOME/ovirt-engine > > DEV_EXTRA_BUILD_FLAGS_GWT_DEFAULTS="-Dgwt.userAgent=gecko1_8,safari" > > BUILD_UT=0 DEV_EXTRA_BUILD_FLAGS="-Dgwt.jjs.maxThreads=1 > > -Dgwt.jjs.permutationWorkerFactory=com.google.gwt.dev.ThreadedPermutationWorkerFactory" > > > > When the two compiler threads spawn, they seem to fire at the same time. > > > > [INFO] Compiling 2 permutations > > [INFO] Compiling permutation 0... > > [INFO] Compiling permutation 1... > > > > I would expect there to be a delay while 1 waits for 0: > > > > [INFO] Compiling 2 permutations > > [INFO] Compiling permutation 0... > > <30 second pause...> <done> > > [INFO] Compiling permutation 1... > > <30 second pause...> <done> > > > > Do I have the options wrong? > > > > Greg > > > > Greg Sheremeta > > Red Hat, Inc. > > Sr. Software Engineer, RHEV > > Cell: 919-807-1086 > > [email protected] > > _______________________________________________ > > Devel mailing list > > [email protected] > > http://lists.ovirt.org/mailman/listinfo/devel > > > _______________________________________________ Devel mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/devel
