diff -r 39df27d97901 Doc/using/cmdline.rst
--- a/Doc/using/cmdline.rst	Tue May 12 14:00:22 2015 +0300
+++ b/Doc/using/cmdline.rst	Tue May 12 16:46:09 2015 +0300
@@ -397,6 +397,8 @@ Miscellaneous options
      stored in a traceback of a trace. Use ``-X tracemalloc=NFRAME`` to start
      tracing with a traceback limit of *NFRAME* frames. See the
      :func:`tracemalloc.start` for more information.
+   * ``-X showalloccount`` to enable the output of the total count of allocated
+     objects for each type (only works when built with ``COUNT_ALLOCS`` defined);
 
    It also allows to pass arbitrary values and retrieve them through the
    :data:`sys._xoptions` dictionary.
@@ -410,6 +412,9 @@ Miscellaneous options
    .. versionadded:: 3.4
       The ``-X showrefcount`` and ``-X tracemalloc`` options.
 
+   .. versionadded:: 3.5
+      The ``-X showalloccount`` option.
+
 
 Options you shouldn't use
 ~~~~~~~~~~~~~~~~~~~~~~~~~
diff -r 39df27d97901 Objects/listobject.c
--- a/Objects/listobject.c	Tue May 12 14:00:22 2015 +0300
+++ b/Objects/listobject.c	Tue May 12 16:46:09 2015 +0300
@@ -82,6 +82,16 @@ static size_t count_reuse = 0;
 static void
 show_alloc(void)
 {
+    PyObject *xoptions, *value;
+    _Py_IDENTIFIER(showalloccount);
+
+    xoptions = PySys_GetXOptions();
+    if (xoptions == NULL)
+        return;
+    value = _PyDict_GetItemId(xoptions, &PyId_showalloccount);
+    if (value != Py_True)
+        return;
+
     fprintf(stderr, "List allocations: %" PY_FORMAT_SIZE_T "d\n",
         count_alloc);
     fprintf(stderr, "List reuse through freelist: %" PY_FORMAT_SIZE_T
diff -r 39df27d97901 Objects/object.c
--- a/Objects/object.c	Tue May 12 14:00:22 2015 +0300
+++ b/Objects/object.c	Tue May 12 16:46:09 2015 +0300
@@ -109,6 +109,15 @@ void
 dump_counts(FILE* f)
 {
     PyTypeObject *tp;
+    PyObject *xoptions, *value;
+    _Py_IDENTIFIER(showalloccount);
+
+    xoptions = PySys_GetXOptions();
+    if (xoptions == NULL)
+        return;
+    value = _PyDict_GetItemId(xoptions, &PyId_showalloccount);
+    if (value != Py_True)
+        return;
 
     for (tp = type_list; tp; tp = tp->tp_next)
         fprintf(f, "%s alloc'd: %" PY_FORMAT_SIZE_T "d, "
diff -r 39df27d97901 Objects/tupleobject.c
--- a/Objects/tupleobject.c	Tue May 12 14:00:22 2015 +0300
+++ b/Objects/tupleobject.c	Tue May 12 16:46:09 2015 +0300
@@ -36,6 +36,16 @@ static Py_ssize_t count_tracked = 0;
 static void
 show_track(void)
 {
+    PyObject *xoptions, *value;
+    _Py_IDENTIFIER(showalloccount);
+
+    xoptions = PySys_GetXOptions();
+    if (xoptions == NULL)
+        return;
+    value = _PyDict_GetItemId(xoptions, &PyId_showalloccount);
+    if (value != Py_True)
+        return;
+
     fprintf(stderr, "Tuples created: %" PY_FORMAT_SIZE_T "d\n",
         count_tracked + count_untracked);
     fprintf(stderr, "Tuples tracked by the GC: %" PY_FORMAT_SIZE_T
diff -r 39df27d97901 Python/pylifecycle.c
--- a/Python/pylifecycle.c	Tue May 12 14:00:22 2015 +0300
+++ b/Python/pylifecycle.c	Tue May 12 16:46:09 2015 +0300
@@ -612,7 +612,7 @@ Py_Finalize(void)
 
     /* Debugging stuff */
 #ifdef COUNT_ALLOCS
-    dump_counts(stdout);
+    dump_counts(stderr);
 #endif
     /* dump hash stats */
     _PyHash_Fini();