mercurial/configitems.py

--- a/mercurial/configitems.py	Fri Jun 30 03:43:55 2017 +0200
+++ b/mercurial/configitems.py	Fri Jun 30 03:43:56 2017 +0200
@@ -338,6 +338,9 @@
 coreconfigitem('profiling', 'output',
     default=None,
 )
+coreconfigitem('profiling', 'showmax',
+    default=0.999,
+)
 coreconfigitem('profiling', 'sort',
     default='inlinetime',
 )