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20 pmap Commands Examples in Linux / UNIX

You can find the memory used by a program (process) by looking into /proc directory or using standard command such as ps or top.

However, you must calculate all memory usage by hand i.e. add Shared Memory + mapped file + total virtual memory size of the process + Resident Set Size + non-swapped physical memory used by process. So how do you find the total memory used by a process or program under Linux? Use a tool called pmap. It reports the memory map of a process or processes.
 
To display process mappings, type
$ pmap pid
$ pmap 3724
 
If you want to see the exented format
The -x option can be used to provide information about the memory allocation and mapping types per mapping. The amount of resident, non-shared anonymous, and locked memory is shown for each mapping:
 
$ pmap -x 3526
 
If you want to see the device format
$ pmap -d 3526
 
If you do not display some header/footer lines.
$ pmap -q 3526
 
 
GENERAL OPTIONS
-x extended Show the extended format.
-d device Show the device format.
-q quiet Do not display some header/footer lines.
-V show version Displays version of program.
 
Reference
http://linux.die.net/man/1/pmap
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Rajesh Kumar

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Total, Over 12 years of extensive experience in the Software Configuration Management domain having depth knowledge of DevOps, Continuous Integration and Delivery, Configuration Management, Build and Installer, Release Management and Application Management.