vendor/dtracetoolkit/dtracetoolkit-20120512vendor/dtracetoolkit

1 files changed, 66 insertions, 0 deletions

diff --git a/Kernel/pridist.d b/Kernel/pridist.d
new file mode 100755
index 000000000000..1b6d3ebb7b06
--- /dev/null
+++ b/Kernel/pridist.d
@@ -0,0 +1,66 @@
+#!/usr/sbin/dtrace -s
+/*
+ * pridist.d - process priority distribution.
+ *             Written using DTrace (Solaris 10 3/05)
+ *
+ * This is a simple DTrace script that samples at 1000 Hz which process
+ * is on the CPUs, and what the priority is. A distribution plot is printed.
+ *
+ * With priorities, the higher the priority the better chance the process
+ * (actually, thread) has of being scheduled.
+ *
+ * This idea came from the script /usr/demo/dtrace/profpri.d, which
+ * produces similar output for one particular PID.
+ *
+ * $Id: pridist.d 3 2007-08-01 10:50:08Z brendan $
+ *
+ * USAGE:       pridist.d       # hit Ctrl-C to end sampling
+ *
+ * FIELDS:
+ *              CMD             process name
+ *              PID             process ID
+ *              value           process priority
+ *              count           number of samples of at least this priority
+ *
+ * BASED ON: /usr/demo/dtrace/profpri.d
+ *
+ * SEE ALSO:
+ *           DTrace Guide "profile Provider" chapter (docs.sun.com)
+ *           dispadmin(1M)
+ *
+ * PORTIONS: 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
+ *
+ * 13-Jun-2005	Brendan Gregg	Created this.
+ * 22-Apr-2006	   "      "	Last update.
+ */
+
+#pragma D option quiet
+
+dtrace:::BEGIN
+{
+	printf("Sampling... Hit Ctrl-C to end.\n");
+}
+
+profile:::profile-1000hz
+{
+	@Count[execname, pid] = lquantize(curlwpsinfo->pr_pri, 0, 170, 5);
+}
+
+dtrace:::END
+{
+	printa(" CMD: %-16s PID: %d\n%@d\n", @Count);
+}