in debug mode report the time to load addon modules.

release/scripts/ui/space_userpref.py

@@ -829,14 +829,23 @@ class USERPREF_PT_addons(bpy.types.Panel):
     @staticmethod
     def _addon_list():
         import sys
+        import time
+
         modules = []
         loaded_modules = set()
         paths = bpy.utils.script_paths("addons")
+
+        if bpy.app.debug:
+            t_main = time.time()
+
         # sys.path.insert(0, None)
         for path in paths:
             # sys.path[0] = path
             modules.extend(bpy.utils.modules_from_path(path, loaded_modules))
 
+        if bpy.app.debug:
+            print("Addon Script Load Time %.4f" % (time.time() - t_main))
+
         # del sys.path[0]
         return modules