1 files changed, 62 insertions, 0 deletions
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/rates/tst.switchrate.d b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/rates/tst.switchrate.d
new file mode 100644
index 000000000000..691b31cd8bbe
--- /dev/null
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/rates/tst.switchrate.d
@@ -0,0 +1,62 @@
+/*
+ * 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 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * ASSERTION:
+ *   If the switch rate is set properly, there should be no drops.
+ *
+ * SECTION: Buffers and Buffering/switch Policy;
+ *	Options and Tunables/bufsize;
+ *	Options and Tunables/switchrate
+ */
+
+/*
+ * We rely on the fact that at least 8 bytes must be stored per iteration
+ * (EPID plus data), but that no more than 40 bytes are stored per iteration.
+ * We are going to let this run for ten seconds.  If the switch rate
+ * is being set properly, there should be no drops.  Note that this test
+ * (regrettably) may be scheduling sensitive -- but it should only fail on
+ * the most pathological systems.
+ */
+#pragma D option bufsize=40
+#pragma D option switchrate=10msec
+#pragma D option quiet
+
+int n;
+
+tick-100msec
+/n < 100/
+{
+	printf("%10d\n", n++);
+}
+
+tick-100msec
+/n == 100/
+{
+	exit(0);
+}