pmap

Pmap is a command line tool used in Unix-like operating systems to display the memory map of a process. It provides detailed information about the memory allocation and usage by a specific process.

When executed with the process ID as an argument, pmap displays information such as the total memory used, memory regions reserved for code and data, and shared memory segments utilized by the process.

Each memory region is represented by an address range along with its permissions and type. Permissions can include read, write, and execute. The type can be private, shared, heap, stack, or mapped file.

Pmap also shows the memory usage of each region, including the resident set size (RSS), which reflects the amount of physical memory currently used by the process for that memory region.

This tool is particularly useful for analyzing the memory behavior of processes, identifying memory leaks, or gaining insights into memory utilization patterns. It helps system administrators and developers optimize memory consumption and diagnose memory-related issues in their applications.