/proc/{id}/smaps - Process Memory Map Details

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∟/proc/{id}/smaps - Process Memory Map Details

This section describes the pseudo file '/proc/{id}/smaps' that represents virtual memory map of a given process with detailed information on each mapped area.

What Is /proc/{id}/smaps? - /proc/{id}/smaps is a pseudo file that contains the memory map of the process of the given id with detailed information on each mapped area.

Here is the memory map with details for the "sleep" process retrieved from the /proc/649848/smaps pseudo file.

herong$ sudo cat /proc/649848/smaps 

56392fc85000-56392fc8c000 r-xp 00000000 fd:00 63570 /usr/bin/sleep
Size:                 28 kB
KernelPageSize:        4 kB
MMUPageSize:           4 kB
Rss:                  28 kB
Pss:                  14 kB
Shared_Clean:         28 kB
Shared_Dirty:          0 kB
Private_Clean:         0 kB
Private_Dirty:         0 kB
Referenced:           28 kB
Anonymous:             0 kB
LazyFree:              0 kB
AnonHugePages:         0 kB
ShmemPmdMapped:        0 kB
FilePmdMapped:         0 kB
Shared_Hugetlb:        0 kB
Private_Hugetlb:       0 kB
Swap:                  0 kB
SwapPss:               0 kB
Locked:                0 kB
THPeligible:    0
ProtectionKey:         0
VmFlags: rd ex mr mw me dw sd 
56392fe8c000-56392fe8d000 r--p 00007000 fd:00 63570 /usr/bin/sleep
Size:                  4 kB
KernelPageSize:        4 kB
MMUPageSize:           4 kB
Rss:                   4 kB
Pss:                   4 kB
Shared_Clean:          0 kB
Shared_Dirty:          0 kB
Private_Clean:         0 kB
Private_Dirty:         4 kB
Referenced:            4 kB
Anonymous:             4 kB
...