src/solaris/doc/sun/man/man1/jmap.1
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.\" Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
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.\" DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.\"
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.\" This code is free software; you can redistribute it and/or modify it
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.\" under the terms of the GNU General Public License version 2 only, as
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.\" published by the Free Software Foundation.
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.\"
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.\" This code is distributed in the hope that it will be useful, but WITHOUT
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.\" ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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.\" FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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.\" version 2 for more details (a copy is included in the LICENSE file that
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.\" accompanied this code).
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.\"
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.\" You should have received a copy of the GNU General Public License version
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.\" 2 along with this work; if not, write to the Free Software Foundation,
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.\" Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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.\"
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.\" Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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.\" or visit www.oracle.com if you need additional information or have any
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.\" questions.
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.\"
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.\"     Arch: generic
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.\"     Software: JDK 8
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.\"     Date: 21 November 2013
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.\"     SectDesc: Troubleshooting Tools
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.\"     Title: jmap.1
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.\"
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.TH jmap 1 "21 November 2013" "JDK 8" "Troubleshooting Tools"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el       .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH NAME    
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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\&.
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.SH SYNOPSIS    
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.sp     
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\fBjmap\fR [ \fIoptions\fR ] \fIpid\fR
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.fi     
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.nf     
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\fBjmap\fR [ \fIoptions\fR ] \fIexecutable\fR \fIcore\fR
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.fi     
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.nf     
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\fBjmap\fR [ \fIoptions\fR ] [ \fIpid\fR ] \fIserver\-id\fR@ ] \fIremote\-hostname\-or\-IP\fR
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.fi     
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.sp     
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\fIoptions\fR
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The command-line options\&. See Options\&.
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\fIpid\fR
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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\&.
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\fIexecutable\fR
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The Java executable from which the core dump was produced\&.
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\fIcore\fR
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The core file for which the memory map is to be printed\&.
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.TP     
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\fIremote-hostname-or-IP\fR
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The remote debug server \f3hostname\fR or \f3IP\fR address\&. See jsadebugd(1)\&.
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.TP     
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\fIserver-id\fR
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An optional unique ID to use when multiple debug servers are running on the same remote host\&.
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.SH DESCRIPTION    
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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\&.
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.PP
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\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\&.
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.SH OPTIONS    
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<no option>
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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\&.
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-dump:[live,] format=b, file=\fIfilename\fR
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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\&.
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.TP
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-finalizerinfo
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Prints information about objects that are awaiting finalization\&.
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-heap
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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\&.
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-histo[:live]
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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\&.
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-clstats
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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\&.
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.TP
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-F
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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\&.
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.TP
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-h
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.br
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Prints a help message\&.
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-help
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Prints a help message\&.
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.TP
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-J\fIflag\fR
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.br
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Passes \f3flag\fR to the Java Virtual Machine where the \f3jmap\fR command is running\&.
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.SH SEE\ ALSO    
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\(bu
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jhat(1)
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\(bu
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jps(1)
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\(bu
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jsadebugd(1)
31876
91b22707521a 8131105: Header Template for nroff man pages *.1 files contains errors
mfang
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.RE
91b22707521a 8131105: Header Template for nroff man pages *.1 files contains errors
mfang
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.br
91b22707521a 8131105: Header Template for nroff man pages *.1 files contains errors
mfang
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'pl 8.5i
91b22707521a 8131105: Header Template for nroff man pages *.1 files contains errors
mfang
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