jmap:tldr:ae628

jmap: Print shared object mappings for a Java process (output like pmap).

jmap

$ jmap ${java_pid}

try on your machine

The command "jmap ${java_pid}" is used to generate a memory map for a Java process identified by the specified process ID.

Here's a breakdown of the command:

"jmap": This is the command-line tool for taking a memory map of a running Java process. It is included with the Java Development Kit (JDK).
"${java_pid}": This is a placeholder for the process ID (PID) of the Java process for which you want to generate the memory map.

To use the command, you need to replace "${java_pid}" with the actual PID of the Java process you are interested in. The PID is a unique identifier for a running process in an operating system.

When you execute the command, it will send a request to the Java process specified by the PID to generate a memory map. The memory map provides information about the memory usage and allocation within the Java process, including details about heap memory, thread stacks, shared libraries, and more. This information can be useful for analyzing memory usage patterns, identifying memory leaks, or troubleshooting performance issues in Java applications.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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