1 files changed, 72 insertions, 0 deletions
diff --git a/Cpu/cpuwalk.d b/Cpu/cpuwalk.d
new file mode 100755
index 000000000000..495f64bb5f95
--- /dev/null
+++ b/Cpu/cpuwalk.d
@@ -0,0 +1,72 @@
+#!/usr/sbin/dtrace -s
+/*
+ * cpuwalk.d - Measure which CPUs a process runs on.
+ *             Written using DTrace (Solaris 10 3/05)
+ *
+ * This program is for multi-CPU servers, and can help identify if a process
+ * is running on multiple CPUs concurrently or not.
+ *
+ * $Id: cpuwalk.d 3 2007-08-01 10:50:08Z brendan $
+ *
+ * USAGE:	cpuwalk.d [duration]
+ *	   eg,
+ *		cpuwalk.d 10		# sample for 10 seconds
+ *		cpuwalk.d		# sample until Ctrl-C is hit
+ *
+ * FIELDS:
+ *		value		CPU id
+ *		count		Number of 1000 hz samples on this CPU
+ *
+ * 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
+ *
+ * 22-Sep-2005  Brendan Gregg   Created this.
+ * 14-Feb-2006	   "      "	Last update.
+ */
+
+#pragma D option quiet
+#pragma D option defaultargs
+
+inline int MAXCPUID = 1024;
+
+dtrace:::BEGIN
+{
+	$1 ? printf("Sampling...\n") :
+	    printf("Sampling... Hit Ctrl-C to end.\n");
+	seconds = 0;
+}
+
+profile:::profile-1000hz
+/pid/
+{
+	@sample[pid, execname] = lquantize(cpu, 0, MAXCPUID, 1);
+}
+
+profile:::tick-1sec
+{
+	seconds++;
+}
+
+profile:::tick-1sec
+/seconds == $1/
+{
+	exit(0);
+}
+
+dtrace:::END
+{
+	printa("\n     PID: %-8d CMD: %s\n%@d", @sample);
+}