1 files changed, 74 insertions, 0 deletions
diff --git a/cddl/contrib/dtracetoolkit/Kernel/cswstat.d b/cddl/contrib/dtracetoolkit/Kernel/cswstat.d
new file mode 100755
index 0000000..98ca83c
--- /dev/null
+++ b/cddl/contrib/dtracetoolkit/Kernel/cswstat.d
@@ -0,0 +1,74 @@
+#!/usr/sbin/dtrace -s
+/*
+ * cswstat.d - context switch time stat.
+ *	       Uses DTrace (Solaris 10 03/05)
+ *
+ * This prints a context switch count and consumed time for context
+ * switching every second.
+ *
+ * $Id: cswstat.d 15 2007-09-11 09:09:25Z brendan $
+ *
+ * USAGE:	cswstat.d
+ *
+ * FIELDS:
+ *		TIME		Current time
+ *		NUM		Number of context switches
+ *		CSWTIME(us)	Time consumed context switching, us
+ *		AVGTIME(us)	Average context switch time, us
+ *
+ * THANKS: Toomas Soome
+ *
+ * COPYRIGHT: Copyright (c) 2005 Brendan Gregg.
+ *
+ * CDDL HEADER START
+ *
+ *  The contents of this file are subject to the terms of the
+ *  Common Development and Distribution License, Version 1.0 only
+ *  (the "License").  You may not use this file except in compliance
+ *  with the License.
+ *
+ *  You can obtain a copy of the license at Docs/cddl1.txt
+ *  or http://www.opensolaris.org/os/licensing.
+ *  See the License for the specific language governing permissions
+ *  and limitations under the License.
+ *
+ * CDDL HEADER END
+ *
+ * 17-May-2005  Brendan Gregg   Created this.
+ * 03-Nov-2005	   "      "	Last update.
+ */
+
+#pragma D option quiet
+
+dtrace:::BEGIN
+{
+	/* print header */
+	printf("%-20s  %8s %12s %12s\n", "TIME", "NUM", "CSWTIME(us)",
+	    "AVGTIME(us)");
+	times = 0;
+	num = 0;
+}
+
+sched:::off-cpu
+{
+	/* csw start */
+	num++;
+	start[cpu] = timestamp;
+}
+
+sched:::on-cpu
+/start[cpu]/
+{
+	/* csw end */
+	times += timestamp - start[cpu];
+	start[cpu] = 0;
+}
+
+profile:::tick-1sec
+{
+	/* print output */
+	printf("%20Y  %8d %12d %12d\n", walltimestamp, num, times/1000,
+	    num == 0 ? 0 : times/(1000 * num));
+	times = 0;
+	num = 0;
+}