1#!/usr/sbin/dtrace -Zs
2/*
3 * sh_calldist.d - measure Bourne shell elapsed times for types of operation.
4 *                 Written for the sh DTrace provider.
5 *
6 * $Id: sh_calldist.d 28 2007-09-13 10:49:37Z brendan $
7 *
8 * This traces shell activity from all Bourne shells on the system that are
9 * running with sh provider support.
10 *
11 * USAGE: sh_calldist.d 	# hit Ctrl-C to end
12 *
13 * This script prints distribution plots of elapsed time for shell
14 * operations. Use sh_calltime.d for summary reports.
15 *
16 * FIELDS:
17 *		1		Filename of the shell or shellscript
18 *		2		Type of call (func/builtin/cmd)
19 *		3		Name of call
20 *
21 * Filename and call names are printed if available.
22 *
23 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
24 *
25 * CDDL HEADER START
26 *
27 *  The contents of this file are subject to the terms of the
28 *  Common Development and Distribution License, Version 1.0 only
29 *  (the "License").  You may not use this file except in compliance
30 *  with the License.
31 *
32 *  You can obtain a copy of the license at Docs/cddl1.txt
33 *  or http://www.opensolaris.org/os/licensing.
34 *  See the License for the specific language governing permissions
35 *  and limitations under the License.
36 *
37 * CDDL HEADER END
38 *
39 * 09-Sep-2007	Brendan Gregg	Created this.
40 */
41
42#pragma D option quiet
43
44dtrace:::BEGIN
45{
46	printf("Tracing... Hit Ctrl-C to end.\n");
47}
48
49sh*:::function-entry
50{
51	self->depth++;
52	self->exclude[self->depth] = 0;
53	self->function[self->depth] = timestamp;
54}
55
56sh*:::function-return
57/self->function[self->depth]/
58{
59	this->elapsed_incl = timestamp - self->function[self->depth];
60	this->elapsed_excl = this->elapsed_incl - self->exclude[self->depth];
61	self->function[self->depth] = 0;
62	self->exclude[self->depth] = 0;
63	this->file = basename(copyinstr(arg0));
64	this->name = copyinstr(arg1);
65
66	@types_incl[this->file, "func", this->name] =
67	    quantize(this->elapsed_incl / 1000);
68	@types_excl[this->file, "func", this->name] =
69	    quantize(this->elapsed_excl / 1000);
70
71	self->depth--;
72	self->exclude[self->depth] += this->elapsed_incl;
73}
74
75sh*:::builtin-entry
76{
77	self->builtin = timestamp;
78}
79
80sh*:::builtin-return
81/self->builtin/
82{
83	this->elapsed = timestamp - self->builtin;
84	self->builtin = 0;
85
86	@types[basename(copyinstr(arg0)), "builtin", copyinstr(arg1)] =
87	    quantize(this->elapsed / 1000);
88
89	self->exclude[self->depth] += this->elapsed;
90}
91
92sh*:::command-entry
93{
94	self->command = timestamp;
95}
96
97sh*:::command-return
98/self->command/
99{
100	this->elapsed = timestamp - self->command;
101	self->command = 0;
102
103	@types[basename(copyinstr(arg0)), "cmd", copyinstr(arg1)] =
104	    quantize(this->elapsed / 1000);
105
106	self->exclude[self->depth] += this->elapsed;
107}
108
109dtrace:::END
110{
111	printf("Elapsed times (us),\n\n");
112	printa("   %s, %s, %s %@d\n", @types);
113
114	printf("Exclusive function elapsed times (us),\n\n");
115	printa("   %s, %s, %s %@d\n", @types_excl);
116
117	printf("Inclusive function elapsed times (us),\n\n");
118	printa("   %s, %s, %s %@d\n", @types_incl);
119}
120