a86c63ca
 Hu Chunming
提交三方库文件
|
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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
'\" t
.\" Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
.\" Arch: generic
.\" Software: JDK 8
.\" Date: 21 November 2013
.\" SectDesc: Troubleshooting Tools
.\" Title: jmap.1
.\"
.if n .pl 99999
.TH jmap 1 "21 November 2013" "JDK 8" "Troubleshooting Tools"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH NAME
jmap \- Prints shared object memory maps or heap memory details for a process, core file, or remote debug server\&. This command is experimental and unsupported\&.
.SH SYNOPSIS
.sp
.nf
\fBjmap\fR [ \fIoptions\fR ] \fIpid\fR
.fi
.nf
\fBjmap\fR [ \fIoptions\fR ] \fIexecutable\fR \fIcore\fR
.fi
.nf
\fBjmap\fR [ \fIoptions\fR ] [ \fIpid\fR ] \fIserver\-id\fR@ ] \fIremote\-hostname\-or\-IP\fR
.fi
.sp
.TP
\fIoptions\fR
The command-line options\&. See Options\&.
.TP
\fIpid\fR
The process ID for which the memory map is to be printed\&. The process must be a Java process\&. To get a list of Java processes running on a machine, use the jps(1) command\&.
.TP
\fIexecutable\fR
The Java executable from which the core dump was produced\&.
.TP
\fIcore\fR
The core file for which the memory map is to be printed\&.
.TP
\fIremote-hostname-or-IP\fR
The remote debug server \f3hostname\fR or \f3IP\fR address\&. See jsadebugd(1)\&.
.TP
\fIserver-id\fR
An optional unique ID to use when multiple debug servers are running on the same remote host\&.
.SH DESCRIPTION
The \f3jmap\fR command prints shared object memory maps or heap memory details of a specified process, core file, or remote debug server\&. If the specified process is running on a 64-bit Java Virtual Machine (JVM), then you might need to specify the \f3-J-d64\fR option, for example: \f3jmap\fR\f3-J-d64 -heap pid\fR\&.
.PP
\fINote:\fR This utility is unsupported and might not be available in future releases of the JDK\&. On Windows Systems where the \f3dbgeng\&.dll\fR file is not present, Debugging Tools For Windows must be installed to make these tools work\&. The \f3PATH\fR environment variable should contain the location of the \f3jvm\&.dll\fR file that is used by the target process or the location from which the crash dump file was produced, for example: \f3set PATH=%JDK_HOME%\ejre\ebin\eclient;%PATH%\fR\&.
.SH OPTIONS
.TP
<no option>
When no option is used, the \f3jmap\fR command prints shared object mappings\&. For each shared object loaded in the target JVM, the start address, size of the mapping, and the full path of the shared object file are printed\&. This behavior is similar to the Oracle Solaris \f3pmap\fR utility\&.
.TP
-dump:[live,] format=b, file=\fIfilename\fR
.br
Dumps the Java heap in \f3hprof\fR binary format to \f3filename\fR\&. The \f3live\fR suboption is optional, but when specified, only the active objects in the heap are dumped\&. To browse the heap dump, you can use the jhat(1) command to read the generated file\&.
.TP
-finalizerinfo
.br
Prints information about objects that are awaiting finalization\&.
.TP
-heap
.br
Prints a heap summary of the garbage collection used, the head configuration, and generation-wise heap usage\&. In addition, the number and size of interned Strings are printed\&.
.TP
-histo[:live]
.br
Prints a histogram of the heap\&. For each Java class, the number of objects, memory size in bytes, and the fully qualified class names are printed\&. The JVM internal class names are printed with an asterisk (*) prefix\&. If the \f3live\fR suboption is specified, then only active objects are counted\&.
.TP
-clstats
.br
Prints class loader wise statistics of Java heap\&. For each class loader, its name, how active it is, address, parent class loader, and the number and size of classes it has loaded are printed\&.
.TP
-F
.br
Force\&. Use this option with the \f3jmap -dump\fR or \f3jmap -histo\fR option when the pid does not respond\&. The \f3live\fR suboption is not supported in this mode\&.
.TP
-h
.br
Prints a help message\&.
.TP
-help
.br
Prints a help message\&.
.TP
-J\fIflag\fR
.br
Passes \f3flag\fR to the Java Virtual Machine where the \f3jmap\fR command is running\&.
.SH SEE\ ALSO
.TP 0.2i
\(bu
jhat(1)
.TP 0.2i
\(bu
jps(1)
.TP 0.2i
\(bu
jsadebugd(1)
.RE
.br
'pl 8.5i
'bp
|
