MATLAB: Matlab2016a long processing time/java exceptions

crashjava

Not sure if this is the right place to ask this, but I recently downloaded 2016a for OSX. It launches fine, but when the GUI appears it more often than not throws some Java exceptions like this:
java.lang.OutOfMemoryError: GC overhead limit exceeded
  at java.util.zip.ZipCoder.getBytes(ZipCoder.java:80)
  at java.util.zip.ZipFile.getEntry(ZipFile.java:306)
  at java.util.jar.JarFile.getEntry(JarFile.java:227)
  at java.util.jar.JarFile.getJarEntry(JarFile.java:210)
  at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:840)
  at sun.misc.URLClassPath.getResource(URLClassPath.java:199)
  at java.net.URLClassLoader$1.run(URLClassLoader.java:358)
  at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
  at com.mathworks.jmi.OpaqueJavaInterface.getExceptionMessage(OpaqueJavaInterface.java:1016)
Exception in thread "BayeuxServer@1796519808" Exception in thread "qtp2809686-122" java.lang.OutOfMemoryError: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded
  at java.util.concurrent.locks.AbstractQueuedSynchronizer.addWaiter(AbstractQueuedSynchronizer.java:606)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireInterruptibly(AbstractQueuedSynchronizer.java:883)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireInterruptibly(AbstractQueuedSynchronizer.java:1221)
  at java.util.concurrent.locks.ReentrantLock.lockInterruptibly(ReentrantLock.java:340)
  at org.eclipse.jetty.util.BlockingArrayQueue.poll(BlockingArrayQueue.java:333)
  at org.eclipse.jetty.util.thread.QueuedThreadPool.idleJobPoll(QueuedThreadPool.java:526)
  at org.eclipse.jetty.util.thread.QueuedThreadPool.access$600(QueuedThreadPool.java:44)
  at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
  at java.lang.Thread.run(Thread.java:745)
What I see is the 'Processing' spinner in the bottom left slowly grind to a halt, and my system usage spike. Once the errors are thrown, I think it continues to run normally. Would anyone have an idea as to why this is happening? FWIW this didn't happen to me on previous versions.
Running on El Capitan on a 2014 MBPr, 16GB RAM/i7 etc.

Best Answer

Solution was turning off Source Code Control in the Preferences. This is an OS-X related issue that showed up in R2015b.
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