What is PMAP command in Linux?

The pmap command in Linux is used to display the memory map of a process. A memory map indicates how memory is spread out. Syntax: pmap [options] pid […]

How do I see memory map in Linux?

As far as I know the only generic way is /proc/iomem . That shows you the kernels of view of what memory ranges are assigned to who. If you want more detail you’ll need to look at each individual driver.

What is anon in PMAP?

Anonymous memory: Memory not relating to any named object or file within the file system is reported as [ anon ]. The pmap command displays common names for certain known anonymous memory mappings, such as: [ heap ] The process heap.

What top command shows Linux?

The top (table of processes) command shows a real-time view of running processes in Linux and displays kernel-managed tasks. The command also provides a system information summary that shows resource utilization, including CPU and memory usage. In this tutorial, you will learn to use the top command in Linux.

What is RSS in PMAP?

Kbytes: size of map in kilobytes. RSS: resident set size in kilobytes.

What is PMAP in Java?

Interface PMap An immutable, persistent map from non-null keys of type K to non-null values of type V.

What is Dev MEM?

/dev/mem is a character device file that is an image of the main memory of the computer. It may be used, for example, to examine (and even patch) the system. Byte addresses in /dev/mem are interpreted as physical memory addresses. References to nonexistent locations cause errors to be returned.

What is a memory mapping?

What Is Memory-Mapping? Memory-mapping is a mechanism that maps a portion of a file, or an entire file, on disk to a range of addresses within an application’s address space. The application can then access files on disk in the same way it accesses dynamic memory.

How do I find the top 10 processes in Linux?

How To Check Top 10 CPU Consuming Process In Linux Ubuntu

  1. -A Select all processes. Identical to -e.
  2. -e Select all processes.
  3. -o User-defined format.
  4. –pid pidlist process ID.
  5. –ppid pidlist parent process ID.
  6. –sort Specify sorting order.
  7. cmd simple name of executable.
  8. %cpu CPU utilization of the process in “##.

How do I find parent process ID?

Type the simply “pstree” command with the “-p” option in the terminal to check how it displays all running parent processes along with their child processes and respective PIDs. It shows the parent ID along with the child processes IDs.

What is VSS and RSS?

VSS (Virtual Set Size): It is the total number of pages accessible by a process. It includes both shared and private pages, but also other memory space like malloc. Not used. RSS (Resident Set Size): Total of all shared libraries.