/proc/[pid]/smaps (since Linux 2.6.14)
This file shows memory consumption for each of the process's mappings.
For each of mappings there is a series of lines such as the following:
08048000-080bc000 r-xp 00000000 03:02 13130 /bin/bash
Size: 464 kB
Rss: 424 kB
Shared_Clean: 424 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
The first of these lines shows the same information as is displayed for
the mapping in /proc/[pid]/maps. The remaining lines show the size of
the mapping, the amount of the mapping that is currently resident in
RAM, the number of clean and dirty shared pages in the mapping, and the
number of clean and dirty private pages in the mapping.
This file is only present if the CONFIG_MMU kernel configuration option
is enabled.
출처: http://www.kernel.org/doc/man-pages/online/pages/man5/proc.5.html
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