diff --git a/util/util_test.go b/util/util_test.go
index 1530a56d4..458637f66 100644
--- a/util/util_test.go
+++ b/util/util_test.go
@@ -53,3 +53,33 @@ func TestXOR(t *testing.T) {
 		}
 	}
 }
+
+func BenchmarkHash256K(b *testing.B) {
+	buf := make([]byte, 256*1024)
+	NewTimeSeededRand().Read(buf)
+	b.SetBytes(int64(256 * 1024))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		Hash(buf)
+	}
+}
+
+func BenchmarkHash512K(b *testing.B) {
+	buf := make([]byte, 512*1024)
+	NewTimeSeededRand().Read(buf)
+	b.SetBytes(int64(512 * 1024))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		Hash(buf)
+	}
+}
+
+func BenchmarkHash1M(b *testing.B) {
+	buf := make([]byte, 1024*1024)
+	NewTimeSeededRand().Read(buf)
+	b.SetBytes(int64(1024 * 1024))
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		Hash(buf)
+	}
+}