diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f32af69
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "submodule_for_performance_testing"]
+	path = submodule_for_performance_testing
+	url = ../submodule_for_performance_testing
diff --git a/submodule_for_performance_testing b/submodule_for_performance_testing
new file mode 160000
index 0000000..5dc5b96
--- /dev/null
+++ b/submodule_for_performance_testing
@@ -0,0 +1 @@
+Subproject commit 5dc5b96e08103c8cbcbed0759a4128120fd019d7