blob: 88470054c6a5f50a1cd3ba33ce809fdfb095bbf7 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
#!/usr/sbin/dtrace -Zs
/*
* j_objnew.d - report Java object allocation using DTrace.
* Written for the Java hotspot DTrace provider.
*
* $Id: j_objnew.d 19 2007-09-12 07:47:59Z brendan $
*
* This traces activity from all Java processes on the system with hotspot
* provider support (1.6.0) and the flag "+ExtendedDTraceProbes". eg,
* java -XX:+ExtendedDTraceProbes classfile
*
* USAGE: j_objnew.d # hit Ctrl-C to end
*
* FIELDS:
* PID Process ID
* OBJS Number of objects created
* CLASS.METHOD Java class and method name
*
* COPYRIGHT: Copyright (c) 2007 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
*
* 09-Sep-2007 Brendan Gregg Created this.
*/
#pragma D option quiet
dtrace:::BEGIN
{
printf("Tracing... Hit Ctrl-C to end.\n");
}
hotspot*:::object-alloc
{
this->class = (char *)copyin(arg1, arg2 + 1);
this->class[arg2] = '\0';
@objs[pid, stringof(this->class)] = count();
@dist[pid, stringof(this->class)] = quantize(arg3);
}
dtrace:::END
{
printf("Java object allocation byte distributions by pid and class,\n");
printa(@dist);
printf("Java object allocation count by pid and class,\n\n");
printf(" %6s %8s %s\n", "PID", "OBJS", "CLASS");
printa(" %6d %8@d %s\n", @objs);
}
|
