1235368Sgnn#!/usr/sbin/dtrace -CZs
2/*
3 * j_calltime.d - measure Java elapsed times for different types of operation.
4 *                Written for the Java hotspot DTrace provider.
5 *
6 * $Id: j_calltime.d 59 2007-10-03 08:21:58Z brendan $
7 *
8 * This traces activity from all Java processes on the system with hotspot
9 * provider support (1.6.0). Method calls are only visible when using the
10 * flag "+ExtendedDTraceProbes". eg, java -XX:+ExtendedDTraceProbes classfile
11 *
12 * USAGE: j_calltime.d [top]	# hit Ctrl-C to end
13 *
14 * The "top" optional argument will truncate the output for each report
15 * section to that many lines, with a default of 10.
16 *
17 * FIELDS:
18 *		PID		Process ID
19 *		TYPE		Type of call (method/gc/total)
20 *		NAME		Name of call
21 *		TOTAL		Total elapsed time for calls (us)
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#define TOP	10		/* default output truncation */
43#define B_FALSE	0
44
45#pragma D option quiet
46#pragma D option defaultargs
47
48dtrace:::BEGIN
49{
50	printf("Tracing... Hit Ctrl-C to end.\n");
51	top = $1 != 0 ? $1 : TOP;
52}
53
54hotspot*:::method-entry
55{
56	self->depth[arg0]++;
57	self->exclude[arg0, self->depth[arg0]] = 0;
58	self->method[arg0, self->depth[arg0]] = timestamp;
59}
60
61hotspot*:::method-return
62/self->method[arg0, self->depth[arg0]]/
63{
64	this->elapsed_incl = timestamp - self->method[arg0, self->depth[arg0]];
65	this->elapsed_excl = this->elapsed_incl -
66	    self->exclude[arg0, self->depth[arg0]];
67	self->method[arg0, self->depth[arg0]] = 0;
68	self->exclude[arg0, self->depth[arg0]] = 0;
69
70	this->class = (char *)copyin(arg1, arg2 + 1);
71	this->class[arg2] = '\0';
72	this->method = (char *)copyin(arg3, arg4 + 1);
73	this->method[arg4] = '\0';
74	this->name = strjoin(strjoin(stringof(this->class), "."),
75	    stringof(this->method));
76
77	@num[pid, "method", this->name] = count();
78	@num[0, "total", "-"] = count();
79	@types_incl[pid, "method", this->name] = sum(this->elapsed_incl);
80	@types_excl[pid, "method", this->name] = sum(this->elapsed_excl);
81	@types_excl[0, "total", "-"] = sum(this->elapsed_excl);
82
83	self->depth[arg0]--;
84	self->exclude[arg0, self->depth[arg0]] += this->elapsed_incl;
85}
86
87hotspot*:::gc-begin
88{
89	self->gc = timestamp;
90	self->full = (boolean_t)arg0;
91}
92
93hotspot*:::gc-end
94/self->gc/
95{
96	this->elapsed = timestamp - self->gc;
97	self->gc = 0;
98
99	@num[pid, "gc", self->full == B_FALSE ? "GC" : "Full GC"] = count();
100	@types[pid, "gc", self->full == B_FALSE ? "GC" : "Full GC"] =
101	    sum(this->elapsed);
102	self->full = 0;
103}
104
105dtrace:::END
106{
107	trunc(@num, top);
108	printf("\nTop %d counts,\n", top);
109	printf("   %6s %-10s %-48s %8s\n", "PID", "TYPE", "NAME", "COUNT");
110	printa("   %6d %-10s %-48s %@8d\n", @num);
111
112	trunc(@types, top);
113	normalize(@types, 1000);
114	printf("\nTop %d elapsed times (us),\n", top);
115	printf("   %6s %-10s %-48s %8s\n", "PID", "TYPE", "NAME", "TOTAL");
116	printa("   %6d %-10s %-48s %@8d\n", @types);
117
118	trunc(@types_excl, top);
119	normalize(@types_excl, 1000);
120	printf("\nTop %d exclusive method elapsed times (us),\n", top);
121	printf("   %6s %-10s %-48s %8s\n", "PID", "TYPE", "NAME", "TOTAL");
122	printa("   %6d %-10s %-48s %@8d\n", @types_excl);
123
124	trunc(@types_incl, top);
125	normalize(@types_incl, 1000);
126	printf("\nTop %d inclusive method elapsed times (us),\n", top);
127	printf("   %6s %-10s %-48s %8s\n", "PID", "TYPE", "NAME", "TOTAL");
128	printa("   %6d %-10s %-48s %@8d\n", @types_incl);
129}
130