diff --git a/include/osgDB/DatabasePager b/include/osgDB/DatabasePager
index 86516f03a..6ded57db3 100644
--- a/include/osgDB/DatabasePager
+++ b/include/osgDB/DatabasePager
@@ -249,6 +249,17 @@ class OSGDB_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseRequestHandl
         /** Reset the Stats variables.*/
         void resetStats();
 
+        /** Set the maximum number of PagedLOD child to remove per frame */
+        void setMaximumNumOfRemovedChildPagedLODs(unsigned int number) { _maximumNumOfRemovedChildPagedLODs = number; }
+
+        /** Get the maximum number of PagedLOD child to remove per frame */
+        unsigned int getMaximumNumOfRemovedChildPagedLODs() const { return _maximumNumOfRemovedChildPagedLODs; }
+
+        /** Set the minimum number of inactive PagedLOD child to keep */
+        void setMinimumNumOfInactivePagedLODs(unsigned int number) { _minimumNumOfInactivePagedLODs = number; }
+
+        /** Get the minimum number of inactive PagedLOD child to keep */
+        unsigned int getMinimumNumOfInactivePagedLODs() const { return _minimumNumOfInactivePagedLODs; }
 
         typedef std::list< osg::ref_ptr<osg::PagedLOD> >                PagedLODList;
         typedef std::set< osg::ref_ptr<osg::StateSet> >                 StateSetList;
@@ -362,6 +373,8 @@ class OSGDB_EXPORT DatabasePager : public osg::NodeVisitor::DatabaseRequestHandl
         double                          _targetFrameRate;
         double                          _minimumTimeAvailableForGLCompileAndDeletePerFrame;
         unsigned int                    _maximumNumOfObjectsToCompilePerFrame;
+        unsigned int                    _maximumNumOfRemovedChildPagedLODs;
+        unsigned int                    _minimumNumOfInactivePagedLODs;
         
         double                          _minimumTimeToMergeTile;
         double                          _maximumTimeToMergeTile;
diff --git a/src/osgDB/DatabasePager.cpp b/src/osgDB/DatabasePager.cpp
index a3237dacc..b7c60d8c7 100644
--- a/src/osgDB/DatabasePager.cpp
+++ b/src/osgDB/DatabasePager.cpp
@@ -25,6 +25,8 @@ static osg::ApplicationUsageProxy DatabasePager_e1(osg::ApplicationUsage::ENVIRO
 static osg::ApplicationUsageProxy DatabasePager_e2(osg::ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_MAXIMUM_OBJECTS_TO_COMPILE_PER_FRAME <int>","maximum number of OpenGL objects to compile per frame in database pager.");
 static osg::ApplicationUsageProxy DatabasePager_e3(osg::ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_DATABASE_PAGER_DRAWABLE <mode>","Set the drawable policy for setting of loaded drawable to specified type.  mode can be one of DoNotModify, DisplayList, VBO or VertexArrays>.");
 static osg::ApplicationUsageProxy DatabasePager_e4(osg::ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_DATABASE_PAGER_PRIORITY <mode>", "Set the thread priority to DEFAULT, MIN, LOW, NOMINAL, HIGH or MAX.");
+static osg::ApplicationUsageProxy DatabasePager_e5(osg::ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_DATABASE_PAGER_CHILDREN_TO_REMOVE_PER_FRAME <int>", "Set the maximum number of PagedLOD child to remove per frame.");
+static osg::ApplicationUsageProxy DatabasePager_e6(osg::ApplicationUsage::ENVIRONMENTAL_VARIABLE,"OSG_DATABASE_PAGER_MINIMUM_INACTIVE_PAGEDLOD <int>", "Set the minimum number of inactive PagedLOD child to keep.");
 
 DatabasePager::DatabasePager()
 {
@@ -134,6 +136,16 @@ DatabasePager::DatabasePager()
         _maximumNumOfObjectsToCompilePerFrame = atoi(ptr);
     }
 
+    _maximumNumOfRemovedChildPagedLODs = 1;
+    if( (ptr = getenv("OSG_DATABASE_PAGER_CHILDREN_TO_REMOVE_PER_FRAME")) != 0)
+    {
+        _maximumNumOfRemovedChildPagedLODs = atoi(ptr);
+    }
+    _minimumNumOfInactivePagedLODs = 100;
+    if( (ptr = getenv("OSG_DATABASE_PAGER_MINIMUM_INACTIVE_PAGEDLOD")) != 0)
+    {
+        _minimumNumOfInactivePagedLODs = atoi(ptr);
+    }
 
     // initialize the stats variables
     resetStats();
@@ -174,6 +186,8 @@ DatabasePager::DatabasePager(const DatabasePager& rhs)
     _targetFrameRate = rhs._targetFrameRate;
     _minimumTimeAvailableForGLCompileAndDeletePerFrame = rhs._minimumTimeAvailableForGLCompileAndDeletePerFrame;
     _maximumNumOfObjectsToCompilePerFrame = rhs._maximumNumOfObjectsToCompilePerFrame;
+    _maximumNumOfRemovedChildPagedLODs = rhs._maximumNumOfRemovedChildPagedLODs;
+    _minimumNumOfInactivePagedLODs = rhs._minimumNumOfInactivePagedLODs;
 
     // initialize the stats variables
     resetStats();
@@ -833,11 +847,10 @@ void DatabasePager::removeExpiredSubgraphs(double currentFrameTime)
     
     unsigned int i = 0;
     // unsigned int numberOfPagedLODToTest = _inactivePagedLODList.size();
-    unsigned int targetNumOfInActivePagedLODs = 100;
     unsigned int targetNumOfRemovedChildPagedLODs = 0;
-    if (_inactivePagedLODList.size()>targetNumOfInActivePagedLODs) targetNumOfRemovedChildPagedLODs = _inactivePagedLODList.size()-targetNumOfInActivePagedLODs;
+    if (_inactivePagedLODList.size() > _minimumNumOfInactivePagedLODs) targetNumOfRemovedChildPagedLODs = _inactivePagedLODList.size() - _minimumNumOfInactivePagedLODs;
     
-    if (targetNumOfRemovedChildPagedLODs>1) targetNumOfRemovedChildPagedLODs=1;
+    if (targetNumOfRemovedChildPagedLODs > _maximumNumOfRemovedChildPagedLODs) targetNumOfRemovedChildPagedLODs = _maximumNumOfRemovedChildPagedLODs;
     
 
     // filter out singly referenced PagedLOD and move reactivated PagedLOD into the active list