1 files changed, 37 insertions, 0 deletions
diff --git a/src/VBox/ExtPacks/VBoxDTrace/onnv/cmd/dtrace/demo/tcp/tcp1stbyte.d b/src/VBox/ExtPacks/VBoxDTrace/onnv/cmd/dtrace/demo/tcp/tcp1stbyte.d
new file mode 100755
index 00000000..94001296
--- /dev/null
+++ b/src/VBox/ExtPacks/VBoxDTrace/onnv/cmd/dtrace/demo/tcp/tcp1stbyte.d
@@ -0,0 +1,37 @@
+#!/usr/sbin/dtrace -s
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+tcp:::connect-established
+{
+	start[args[1]->cs_cid] = timestamp;
+}
+
+tcp:::receive
+/start[args[1]->cs_cid] && (args[2]->ip_plength - args[4]->tcp_offset) > 0/
+{
+	@latency["1st Byte Latency (ns)", args[2]->ip_saddr] =
+	    quantize(timestamp - start[args[1]->cs_cid]);
+	start[args[1]->cs_cid] = 0;
+}