diff --git a/indra/llcommon/tests/llframetimer_test.cpp b/indra/llcommon/tests/llframetimer_test.cpp
index 46fc4ce93a481f5304f30019ba97e180f3498553..c36b6a1c4274dfcfd97f3eff1aba7589b21d3623 100755
--- a/indra/llcommon/tests/llframetimer_test.cpp
+++ b/indra/llcommon/tests/llframetimer_test.cpp
@@ -83,7 +83,13 @@ namespace tut
 	}
 	template<> template<>
 	void frametimer_object_t::test<3>()
-	{
+	{
+		clock_t t1 = clock();
+		ms_sleep(200);
+		clock_t t2 = clock();
+		clock_t elapsed = t2 - t1 + 1;
+		std::cout << "Note: using clock(), ms_sleep() actually took " << (long)elapsed << "ms" << std::endl;
+
 		F64 seconds_since_epoch = LLFrameTimer::getTotalSeconds();
 		seconds_since_epoch += 2.0;
 		LLFrameTimer timer;