diff --git a/contrib/perf.py b/contrib/perf.py
--- a/contrib/perf.py
+++ b/contrib/perf.py
@@ -1112,11 +1112,13 @@ def perfdirstate(ui, repo, **opts):
     timer, fm = gettimer(ui, opts)
     b"a" in repo.dirstate
 
+    def setup():
+        repo.dirstate.invalidate()
+
     def d():
-        repo.dirstate.invalidate()
         b"a" in repo.dirstate
 
-    timer(d)
+    timer(d, setup=setup)
     fm.end()