diff --git a/test/e2e/scalability/density.go b/test/e2e/scalability/density.go
index 95cf0f7ce7a..c609670c3cc 100644
--- a/test/e2e/scalability/density.go
+++ b/test/e2e/scalability/density.go
@@ -14,6 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+// DEPRECATED.
+// We already migrated all periodic and presubmit tests to ClusterLoader2.
+// We are still keeping this file for optional functionality, but once
+// this is supported in ClusterLoader2 tests, this test will be removed
+// (hopefully in 1.16 release).
+// Please don't add new functionality to this file and instead see:
+// https://github.com/kubernetes/perf-tests/tree/master/clusterloader2
+
 package scalability
 
 import (
diff --git a/test/e2e/scalability/framework.go b/test/e2e/scalability/framework.go
index fa58f25b689..ea123af1a69 100644
--- a/test/e2e/scalability/framework.go
+++ b/test/e2e/scalability/framework.go
@@ -14,6 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+// DEPRECATED.
+// We already migrated all periodic and presubmit tests to ClusterLoader2.
+// We are still keeping this directory for optional functionality, but once
+// this is supported in ClusterLoader2 tests, this test will be removed
+// (hopefully in 1.16 release).
+// Please don't add new functionality to this directory and instead see:
+// https://github.com/kubernetes/perf-tests/tree/master/clusterloader2
+
 package scalability
 
 import "github.com/onsi/ginkgo"
diff --git a/test/e2e/scalability/load.go b/test/e2e/scalability/load.go
index 8a49cdfe4c7..4f4ebe1c178 100644
--- a/test/e2e/scalability/load.go
+++ b/test/e2e/scalability/load.go
@@ -14,6 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+// DEPRECATED.
+// We already migrated all periodic and presubmit tests to ClusterLoader2.
+// We are still keeping this file for optional functionality, but once
+// this is supported in ClusterLoader2 tests, this test will be removed
+// (hopefully in 1.16 release).
+// Please don't add new functionality to this file and instead see:
+// https://github.com/kubernetes/perf-tests/tree/master/clusterloader2
+
 package scalability
 
 import (