--- a/contrib/perf.py	Tue Oct 18 17:32:51 2016 -0700
+++ b/contrib/perf.py	Tue Oct 18 17:33:39 2016 -0700
@@ -407,7 +407,7 @@
     repocleartagscache = repocleartagscachefunc(repo)
     def t():
         repo.changelog = mercurial.changelog.changelog(svfs)
-        repo.manifest = mercurial.manifest.manifest(svfs)
+        repo.manifestlog = mercurial.manifest.manifestlog(svfs, repo)
         repocleartagscache()
         return len(repo.tags())
     timer(t)