EVOLUTION-MANAGER

Edit File: jmap.1

.\" Automatically generated by Pandoc 2.3.1 .\" .TH "JMAP" "1" "2023" "JDK 17.0.8" "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