---
name: "jmap-openjdk25"
section: "1"
platform: "linux"
package: "jdk25-openjdk"
version: "25.0.5.0.3.u1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/jmap-openjdk25"
---

# jmap-openjdk25(1)

print details of a specified process

## NAME

jmap - print details of a specified process

## SYNOPSIS

**Note:** This command is experimental and unsupported.

`jmap` \[*options*\] *pid*

- *options*

  This represents the `jmap` command-line options. See **Options for the jmap Command**.

- *pid*

  The process ID for which the information specified by the *options* 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 `ps` command or, if the JVM processes are not running in a separate docker instance, the **jps** command.

## DESCRIPTION

The `jmap` command prints details of a specified running process.

**Note:**

This command is unsupported and might not be available in future releases of the JDK. On Windows Systems where the `dbgeng.dll` file isn't present, the Debugging Tools for Windows must be installed to make these tools work. The `PATH` environment variable should contain the location of the `jvm.dll` file that's used by the target process or the location from which the core dump file was produced.

## OPTIONS FOR THE JMAP COMMAND

- `-clstats` *pid*

  Connects to a running process and prints class loader statistics of Java heap.

- `-finalizerinfo` *pid*

  Connects to a running process and prints information on objects awaiting finalization.

- `-histo`\[`:live`\] *pid*

  Connects to a running process and prints a histogram of the Java object heap. If the `live` suboption is specified, it then counts only live objects.

- `-dump:`*dump\_options* *pid*

  Connects to a running process and dumps the Java heap. The *dump\_options* include:

  - •

    `live` --- When specified, dumps only the live objects; if not specified, then dumps all objects in the heap.

  - •

    `format=b` --- Dumps the Java heap in `hprof` binary format

  - •

    `file=`*filename* --- Dumps the heap to *filename* Example: `jmap -dump:live,format=b,file=heap.bin` *pid*