diff --git a/mercurial/changegroup.py b/mercurial/changegroup.py
--- a/mercurial/changegroup.py
+++ b/mercurial/changegroup.py
@@ -1073,6 +1073,11 @@
                 # because of narrow clones). Do this even for the root
                 # directory (tree=='')
                 prunednodes = []
+            elif not self._ellipses:
+                # In non-ellipses case and large repositories, it is better to
+                # prevent calling of store.rev and store.linkrev on a lot of
+                # nodes as compared to sending some extra data
+                prunednodes = nodes.copy()
             else:
                 # Avoid sending any manifest nodes we can prove the
                 # client already has by checking linkrevs. See the