TOP BLOCKING OBJECTS:

Monitor class                                        Contention count
  org/apache/derby/impl/services/locks/ActiveLock                   2
  java/lang/ref/ReferenceQueue$Lock                                 2
  org/apache/derby/impl/services/cache/CachedItem                   2
  org/apache/derby/impl/services/reflect/ReflectLoaderJava2         3
  java/io/PrintStream                                               5
  org/apache/derby/impl/store/raw/data/StoredPage                  10
  sun/misc/Launcher$AppClassLoader                                 10
  org/apache/derby/impl/sql/GenericPreparedStatement               10
  org/apache/derby/impl/store/raw/xact/XactFactory                 11
  org/apache/derby/impl/store/raw/xact/TransactionTable            29
  java/util/Hashtable                                              34
  org/apache/derby/impl/store/raw/data/AllocationCache             36
  org/apache/derby/impl/services/cache/Clock                      257
  org/apache/derby/impl/services/locks/SinglePool                 577
  org/apache/derby/impl/services/locks/LockSet                   7851

TOP BLOCKING OBJECTS BY WAIT TIME:

Monitor class                                          Wait time (ms)
  java/lang/ref/ReferenceQueue$Lock                                 2
  org/apache/derby/impl/services/locks/ActiveLock                   2
  org/apache/derby/impl/services/cache/CachedItem                   6
  org/apache/derby/impl/store/raw/data/StoredPage                  11
  org/apache/derby/impl/services/reflect/ReflectLoaderJava2        13
  org/apache/derby/impl/store/raw/data/AllocationCache            110
  org/apache/derby/impl/sql/GenericPreparedStatement              120
  org/apache/derby/impl/store/raw/xact/TransactionTable           129
  java/util/Hashtable                                             198
  org/apache/derby/impl/store/raw/xact/XactFactory                350
  sun/misc/Launcher$AppClassLoader                                660
  java/io/PrintStream                                             709
  org/apache/derby/impl/services/cache/Clock                     1380
  org/apache/derby/impl/services/locks/SinglePool                3137
  org/apache/derby/impl/services/locks/LockSet                  16194

TOP BLOCKING METHOD SIGNATURES:

  org/apache/derby/impl/services/locks/LockSet.lockObject(Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;ILorg/apache/derby/iapi/services/locks/Latch;)Lorg/apache/derby/impl/services/locks/Lock;*
               55

  org/apache/derby/impl/services/cache/Clock.find(Ljava/lang/Object;)Lorg/apache/derby/iapi/services/cache/Cacheable;*
               56

  org/apache/derby/impl/services/locks/LockSet.lockObject(Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;ILorg/apache/derby/iapi/services/locks/Latch;)Lorg/apache/derby/impl/services/locks/Lock;*
               56

  org/apache/derby/impl/services/cache/Clock.release(Lorg/apache/derby/iapi/services/cache/Cacheable;)V*
               65

  org/apache/derby/impl/services/locks/SinglePool.lockAnObject(Ljava/lang/Object;Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;ILorg/apache/derby/iapi/services/locks/Latch;)Lorg/apache/derby/impl/services/locks/Lock;*
               79

  java/util/Hashtable.get(Ljava/lang/Object;)Ljava/lang/Object;*
               84

  org/apache/derby/impl/services/locks/SinglePool.unlock(Ljava/lang/Object;Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;)I
               85

  org/apache/derby/impl/services/locks/SinglePool.lockObject(Ljava/lang/Object;Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;I)Z
              103

  org/apache/derby/impl/services/locks/LockSpace.unlockGroup(Lorg/apache/derby/impl/services/locks/LockSet;Ljava/lang/Object;)V
              110

  org/apache/derby/impl/services/locks/LockSet.unlock(Lorg/apache/derby/iapi/services/locks/Latch;I)V*
              153

  java/util/Hashtable.get(Ljava/lang/Object;)Ljava/lang/Object;*
              221

  org/apache/derby/impl/services/locks/SinglePool.lockAnObject(Ljava/lang/Object;Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;ILorg/apache/derby/iapi/services/locks/Latch;)Lorg/apache/derby/impl/services/locks/Lock;
              260

  org/apache/derby/impl/services/locks/SinglePool.unlatch(Lorg/apache/derby/iapi/services/locks/Latch;)V
              264

  org/apache/derby/impl/services/locks/SinglePool.unlock(Ljava/lang/Object;Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;)I
              330

  org/apache/derby/impl/services/locks/SinglePool.latchObject(Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;I)Z
              459

  org/apache/derby/impl/services/locks/LockSet.lockObject(Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;ILorg/apache/derby/iapi/services/locks/Latch;)Lorg/apache/derby/impl/services/locks/Lock;*
              559

  org/apache/derby/impl/services/locks/LockSet.unlock(Lorg/apache/derby/iapi/services/locks/Latch;I)V*
             1714

  org/apache/derby/impl/services/locks/LockSet.lockObject(Ljava/lang/Object;Lorg/apache/derby/iapi/services/locks/Lockable;Ljava/lang/Object;ILorg/apache/derby/iapi/services/locks/Latch;)Lorg/apache/derby/impl/services/locks/Lock;*
             2840