mercurial/wireproto.py

--- a/mercurial/wireproto.py	Fri May 29 00:09:36 2015 -0700
+++ b/mercurial/wireproto.py	Thu May 28 23:49:19 2015 -0700
@@ -324,6 +324,8 @@
         self.ui.debug('preparing listkeys for "%s"\n' % namespace)
         yield {'namespace': encoding.fromlocal(namespace)}, f
         d = f.value
+        self.ui.debug('received listkey for "%s": %i bytes\n'
+                      % (namespace, len(d)))
         yield pushkeymod.decodekeys(d)
 
     def stream_out(self):