diff -r 49c7b701fdc2 -r 89703e6151e7 mercurial/profiling.py
--- a/mercurial/profiling.py	Wed Oct 17 14:47:01 2018 +0200
+++ b/mercurial/profiling.py	Wed Oct 24 22:24:10 2018 -0400
@@ -101,7 +101,8 @@
     else:
         ui.warn(_("invalid sampling frequency '%s' - ignoring\n") % freq)
 
-    track = ui.config('profiling', 'time-track')
+    track = ui.config('profiling', 'time-track',
+                      pycompat.iswindows and 'cpu' or 'real')
     statprof.start(mechanism='thread', track=track)
 
     try: