diff --git a/hphp/test/large_memory/config.hdf b/hphp/test/large_memory/config.hdf
new file mode 100644
index 000000000..97c606f25
--- /dev/null
+++ b/hphp/test/large_memory/config.hdf
@@ -0,0 +1,7 @@
+Repo {
+  Local.Mode = r-
+  Central.Path = /var/facebook/hhvm/cli.hhbc
+  Eval.Mode = readonly
+  Commit = true
+  DebugInfo = false
+}