diff --git a/Lib/pprint.py b/Lib/pprint.py
index 34ed12637..575688d8e 100644
--- a/Lib/pprint.py
+++ b/Lib/pprint.py
@@ -637,6 +637,19 @@ def _recursion(object):
             % (type(object).__name__, id(object)))
 
 
+def _perfcheck(object=None):
+    import time
+    if object is None:
+        object = [("string", (1, 2), [3, 4], {5: 6, 7: 8})] * 100000
+    p = PrettyPrinter()
+    t1 = time.perf_counter()
+    p._safe_repr(object, {}, None, 0, True)
+    t2 = time.perf_counter()
+    p.pformat(object)
+    t3 = time.perf_counter()
+    print("_safe_repr:", t2 - t1)
+    print("pformat:", t3 - t2)
+
 def _wrap_bytes_repr(object, width, allowance):
     current = b''
     last = len(object) // 4 * 4
@@ -653,3 +666,6 @@ def _wrap_bytes_repr(object, width, allowance):
             current = candidate
     if current:
         yield repr(current)
+
+if __name__ == "__main__":
+    _perfcheck()
diff --git a/Lib/test/test_pprint.py b/Lib/test/test_pprint.py
index 6ea7e7db2..c7b989394 100644
--- a/Lib/test/test_pprint.py
+++ b/Lib/test/test_pprint.py
@@ -203,7 +203,7 @@ class QueryTestCase(unittest.TestCase):
     def test_unreadable(self):
         # Not recursive but not readable anyway
         pp = pprint.PrettyPrinter()
-        for unreadable in object(), int, pprint, pprint.isrecursive:
+        for unreadable in type(3), pprint, pprint.isrecursive:
             # module-level convenience functions
             self.assertFalse(pprint.isrecursive(unreadable),
                              "expected not isrecursive for %r" % (unreadable,))