From: "Einav Cohen" <ecohen(a)redhat.com&gt; To: "Greg Sheremeta" <gshereme(a)redhat.com&gt; Cc: "Vojtech Szocs" <vszocs(a)redhat.com&gt;, "Alexander Wels" <awels(a)redhat.com&gt;, devel(a)ovirt.org Sent: Wednesday, May 14, 2014 9:22:53 PM 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? 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] ---- 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" <gshereme(a)redhat.com&gt; > To: "Vojtech Szocs" <vszocs(a)redhat.com&gt;, "Alexander Wels" > <awels(a)redhat.com&gt; > Cc: devel(a)ovirt.org > 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 > gshereme(a)redhat.com > _______________________________________________ > Devel mailing list > Devel(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/devel >

From: "Greg Sheremeta" <gshereme(a)redhat.com&gt; To: "Vojtech Szocs" <vszocs(a)redhat.com&gt;, "Alexander Wels" <awels(a)redhat.com&gt; Cc: devel(a)ovirt.org Sent: Thursday, May 15, 2014 3:09:17 AM Subject: 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 gshereme(a)redhat.com