Bug 82798 TableViewer internalRefresh is very slow as of 1.19
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
if (min < items.length) {
			for (int i = items.length; --i >= min;) {
				
				disassociate(items[i]);
			}
			table.remove(min, items.length - 1);
		}
		
		
		if (table.getItemCount() == 0) {
			table.removeAll();
		}
		
		for (int i = 0; i < min; ++i) {
							
			TableItem item = items[i];
			if (item.getData() == null) 
				updateItem(item, children[i]);
		}
		
		for (int i = min; i < children.length; ++i) {
			createItem(children[i],i);
		}
	}
	/**
	 * Removes the given elements from this table viewer.
	 * 
	 * @param elements
	 *            the elements to remove
	 */