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Name	Size	Permission
jar.1	11.39 KB	-rw-r--r--
jarsigner.1	54.64 KB	-rw-r--r--
java.1	194.83 KB	-rw-r--r--
javac.1	83.12 KB	-rw-r--r--
javadoc.1	45.53 KB	-rw-r--r--
javap.1	7.63 KB	-rw-r--r--
jcmd.1	32.97 KB	-rw-r--r--
jconsole.1	3.58 KB	-rw-r--r--
jdb.1	8.69 KB	-rw-r--r--
jdeprscan.1	7.95 KB	-rw-r--r--
jdeps.1	11.96 KB	-rw-r--r--
jfr.1	8.82 KB	-rw-r--r--
jhsdb.1	7.17 KB	-rw-r--r--
jinfo.1	3.42 KB	-rw-r--r--
jlink.1	11.66 KB	-rw-r--r--
jmap.1	3.41 KB	-rw-r--r--
jmod.1	11.83 KB	-rw-r--r--
jpackage.1	14.45 KB	-rw-r--r--
jps.1	8.26 KB	-rw-r--r--
jrunscript.1	5.16 KB	-rw-r--r--
jshell.1	42.66 KB	-rw-r--r--
jstack.1	2.98 KB	-rw-r--r--
jstat.1	23.54 KB	-rw-r--r--
jstatd.1	7.69 KB	-rw-r--r--
keytool.1	109.25 KB	-rw-r--r--
rmiregistry.1	3.18 KB	-rw-r--r--
serialver.1	2.84 KB	-rw-r--r--

Code Editor : jmap.1

.\" Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved.
.\" DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
.\"
.\" This code is free software; you can redistribute it and/or modify it
.\" under the terms of the GNU General Public License version 2 only, as
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.\" FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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.\" accompanied this code).
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.\" or visit www.oracle.com if you need additional information or have any
.\" questions.
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.\" Automatically generated by Pandoc 2.3.1
.\"
.TH "JMAP" "1" "2021" "JDK 17" "JDK Commands"
.hy
.SH NAME
.PP
jmap \- print details of a specified process
.SH SYNOPSIS
.PP
\f[B]Note:\f[R] This command is experimental and unsupported.
.PP
\f[CB]jmap\f[R] [\f[I]options\f[R]] \f[I]pid\f[R]
.TP
.B \f[I]options\f[R]
This represents the \f[CB]jmap\f[R] command\-line options.
See \f[B]Options for the jmap Command\f[R].
.RS
.RE
.TP
.B \f[I]pid\f[R]
The process ID for which the information specified by the
\f[I]options\f[R] is to be printed.
The process must be a Java process.
To get a list of Java processes running on a machine, use either the
\f[CB]ps\f[R] command or, if the JVM processes are not running in a
separate docker instance, the \f[B]jps\f[R] command.
.RS
.RE
.SH DESCRIPTION
.PP
The \f[CB]jmap\f[R] command prints details of a specified running process.
.PP
\f[B]Note:\f[R]
.PP
This command is unsupported and might not be available in future
releases of the JDK.
On Windows Systems where the \f[CB]dbgeng.dll\f[R] file isn\[aq]t present,
the Debugging Tools for Windows must be installed to make these tools
work.
The \f[CB]PATH\f[R] environment variable should contain the location of
the \f[CB]jvm.dll\f[R] file that\[aq]s used by the target process or the
location from which the core dump file was produced.
.SH OPTIONS FOR THE JMAP COMMAND
.TP
.B \f[CB]\-clstats\f[R] \f[I]pid\f[R]
Connects to a running process and prints class loader statistics of Java
heap.
.RS
.RE
.TP
.B \f[CB]\-finalizerinfo\f[R] \f[I]pid\f[R]
Connects to a running process and prints information on objects awaiting
finalization.
.RS
.RE
.TP
.B \f[CB]\-histo\f[R][\f[CB]:live\f[R]] \f[I]pid\f[R]
Connects to a running process and prints a histogram of the Java object
heap.
If the \f[CB]live\f[R] suboption is specified, it then counts only live
objects.
.RS
.RE
.TP
.B \f[CB]\-dump:\f[R]\f[I]dump_options\f[R] \f[I]pid\f[R]
Connects to a running process and dumps the Java heap.
The \f[I]dump_options\f[R] include:
.RS
.IP \[bu] 2
\f[CB]live\f[R] \-\-\- When specified, dumps only the live objects; if not
specified, then dumps all objects in the heap.
.IP \[bu] 2
\f[CB]format=b\f[R] \-\-\- Dumps the Java heap in \f[CB]hprof\f[R] binary
format
.IP \[bu] 2
\f[CB]file=\f[R]\f[I]filename\f[R] \-\-\- Dumps the heap to
\f[I]filename\f[R]
.PP
Example: \f[CB]jmap\ \-dump:live,format=b,file=heap.bin\f[R] \f[I]pid\f[R]
.RE

${this.title}

Code Editor : jmap.1