--- a/contrib/perf.py	Thu Nov 10 02:13:19 2016 -0800
+++ b/contrib/perf.py	Thu Nov 10 02:13:19 2016 -0800
@@ -567,7 +567,7 @@
     t = ctx.manifestnode()
     def d():
         repo.manifest.clearcaches()
-        repo.manifest.read(t)
+        repo.manifestlog[t].read()
     timer(d)
     fm.end()