1 files changed, 16 insertions, 0 deletions
diff --git a/src/runtime/mprof_test.go b/src/runtime/mprof_test.go
new file mode 100644
index 0000000000..d819c11d1d
--- /dev/null
+++ b/src/runtime/mprof_test.go
@@ -0,0 +1,16 @@
+// Copyright 2026 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package runtime_test
+
+import (
+	. "runtime"
+	"testing"
+)
+
+func BenchmarkBlocksampled(b *testing.B) {
+	for b.Loop() {
+		Blocksampled(42, 1337)
+	}
+}