diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index 95d1cf91f50..6aaf10c461b 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -415,6 +415,9 @@ always available.
    additional garbage collector overhead if the object is managed by the garbage
    collector.
 
+   See `recursive sizeof recipe <http://code.activestate.com/recipes/577504>`_
+   for an example of using :func:`getsizeof` recursively to find the size of
+   containers and all their contents.
 
 .. function:: getswitchinterval()